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The concept of beauty and cosmetic is an ancient as mankind and civilization. The word‘COSMETIC’ was derived from the Greek word “KOSM TIKAS “meaning having the power, arrange, skillin decorating. In starting with 1990, some cosmetic manufacturer company claims that addition ofsome plant based active ingredient, therapeutically benefit to describe the OTC skin care products, suchas alpha – hydroxy acid, retinoic acid, ascorbic acid and coenzyme. The herbal cosmetic is thepreparations containing phytochemical from a botanical source, which influence the function of skinand provide nutrients necessary for the healthy skin and hair. The beauty of skin and hair depends uponsome facts such as – healthy habits, climatic conditions, routine job and maintenance. In front ofmirror, we don’t recognize ourselves, in compare to 10 years back. Dark circles under the eyes,pigmentation, wrinkles – all of these indicate our aging problems. There is some small basic step thatyou can follow everyday of your life – the ‘CTM’ process. This CTM process not only applicable for theone who has the aging problem, but also applicable for all the ages of public both man and woman. Likeany other branch of science and technology, present scenario of herbal medicines has its own limitationarising out of its own technical constituents. Coconut oil is good for especially dry skin. Some commontriggers for hair fall – genetic, hormonal, stress, medications, Immunity, Radiation, Tight Hairdos.Bhringraj; it promotes hair growth, prevents hair fall, treat damaged hair and strengthens hair follicles.An itchy scalp and flakiness are the hallmark signs of dandruff, but it may also cause other symptomslike greasy patches on the scalp and tingling skin. Neem; it stimulates hair growth, promotes scalphealthy and act as an anti-bacterial. Stop taking an herb if any side effect develops such as allergy,stomach upset, skin rash or headache.
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Objective To explore the efficacy and adverse reaction of modified Chushi-Jiedu decoction combined with external application of purslane in the treatment of acute eczema with damp heat and skin retention. Methods A total of 80 patients with damp heat skin type acute eczema were collected in the department of Dermatology of our hospital from January to December of 2017, and the patients were randomly divided into two groups, each 40 cases. The control group was treated with Cetirizine Hydrochloride Tablets and hydrocortisone ointment, and the observation group was treated with modified Chushi-Jiedu decoction combined with external application of purslane. The effects and adverse reaction of two groups were compared after 2 weeks of treatment. Results The total effective rate of the observation group was 97.5% (39/40), and the control group was 80.0% (32/40), where the comparison difference between the two groups was statistically significant (χ2=6.135, P=0.013). After treatment, the lesion area and lesion form and pruritus scores of the observation group were significantly lower than those of the control group (t value were 5.060, 4.391, 8.761, P<0.01); the levels of IL-4 (0.15 ± 0.06 ng/L vs. 0.31 ± 0.08 ng/L, t=10.119), TNF-α (19.03 ± 3.26 ng/L vs. 25.58 ± 4.03 ng/L, t=7.992) of the observation group were significantly lower than those of the control group (P<0.01). The levels of CD4+(33.42% ± 3.53 % vs. 27.38% ± 3.06%, t=8.177), CD4+/CD8+(1.37 ± 0.28 vs. 0.97 ± 0.19, t=7.170) in observation group were significantly higher than the control group (P<0.01), and the levels of CD8+(24.32% ± 2.10% vs. 28.03% ± 2.51%, t=7.476) was significantly lower than the control group ( P<0.01). Conclusions The modificatied Chushi-Jiedu decoction combined with external application of purslane is safe and effective for the treatment of acute eczema with damp heat and skin type, and it can alleviate the inflammatory reaction and improve the immunity of the body.
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BACKGROUND: Research into the Baumann skin type (BST) has recently expanded, with growing interest in the development of an efficient and effective skin type classification system for better understanding of this skin condition. OBJECTIVE: We aimed to identify male-specific skin type characteristics with investigation into the distribution of BST by age and region in the Korean male population and to determine the intrinsic and extrinsic factors related to skin type. METHODS: A questionnaire was administered to collect information about age, region, working behavior, drinking behavior, smoking behavior, usual habit of sun protection, medical history, and the BST which consisted of four parameters; oily (O) or dry (D), sensitive (S) or resistant (R), pigmented (P) or non-pigmented (N), and wrinkled (W) or tight (T). RESULTS: We surveyed 1,000 Korean males aged between 20 and 60 years who were divided equally by age and region. Of the total respondents, OSNW type accounted for the largest percentage and ORPW type the lowest. In terms of Baumann parameters, O type was 53.5%, S type was 56.1%, N type was 84.4% and W type was 57.5%. Several behavioral factors were found to have various relationships with the skin type. CONCLUSION: The predominant skin type in the Korean male respondents was OSNW type, and the distribution of skin types with regards to age and region was reported to be distinct. Therefore, skin care should be customized based on detailed skin types considering the various environmental factors.
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Humans , Male , Classification , Drinking Behavior , Skin Care , Skin , Smoke , Smoking , Solar System , Surveys and QuestionnairesABSTRACT
BACKGROUND: To meet the need for a subspecialized skin type system, the Baumann skin type (BST) system was proposed. OBJECTIVE: To evaluate the distribution of BST types and influencing factors among Korean women. METHODS: BST questionnaires were administered to 1,000 Korean women. The possible responses were as follows: oily (O) or dry (D), sensitive (S) or resistant (R), pigmented (P) or non-pigmented (N), and wrinkled (W) or tight (T). The correlations of the BST with the subjects' age, location, ultraviolet (UV) ray exposure, drinking and smoking habits, and blood type were assessed. RESULTS: The OSNT, DSNT, DRNT, and OSNW skin types were the most common skin types (55.3%). The O, S, P, and W types accounted for 46.6%, 68.8%, 23.2%, and 31.9%, respectively. The proportion of the O and S type was the highest in Gyeongsangbuk-do (55.0%) and Seoul (77.2%). The proportion of the P and W type was the highest in Gyeongsangbuk-do (33.0%) and Chungcheong-do (39.0%). The O type decreased in the higher age group, whereas the P and W type showed a reversed tendency. In smokers, the proportion of W type was significantly higher than in the non-smokers (66.3% vs. 24.1%, p<0.05). CONCLUSION: The 4 most common BST types were OSNT, DSNT, DRNT, and OSNW. In the comparison across the 4 BST parameters according to the age, region, smoking and drinking habits, occupation, blood type, and UV exposure, significant differences were observed. Individualized and customized skin care is required according to the personal skin type.
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Female , Humans , Drinking , Occupations , Seoul , Skin Care , Skin , Smoke , Smoking , Surveys and QuestionnairesABSTRACT
BackgroundIn Mongolia scientists have been doing research about skin disease and process of aging. Howeverthere has not enough study material about skin aging process which is the key indicator of aging andhow that affect to Mongolian people.GoalMain purpose is to study correlations between main index of skin type of the body, cardiovascularsystem, biological age, epidermal growth factor and blood plasma melatonin, within the people of Uvsprovincial center as they are relatively healthy people.Material and MethodsResearch works were done using cross sectional study model in years 2015-2016, within randomlychosen 400 citizens of Ulaangom city, counted to be relatively healthy people. Research model includes41 questionnaires, examination and blood plasma samples.Basic indexes of the body, cardiovascular system and respiratory functions were chosen by biomarkers,biological age is determined by V.P.Voytenko’s 4th version method and adaptive capacity assessment isdetermined by R.M.Baevskii’s multi-repeating regression method.Main skin type parameters such as porosity, wrinkles, pigmentation, elastics and aging is determined bythe “BOOMTECH skin diagnosis” digital equipment made in the Republic of Korea.The blood plasma MLT and EGF were measured by the method of ELISA analysis ELISA made in thelaboratory of the “AVITSENNA Science and Technology center”.The study material analysis carried out an analysis using logistic regression analysis and Pearson’scorrelation coefficient with SPSS 23.0 software.ResultThere’s an inverse weak correlation between blood plasma MLT and EGF with body wealth characteristicsof Uvs province citizens. It shows that when the blood plasma MLT and EGF decreases the body weight,body height and body weight index increase tendency.In women the decrease of blood plasma MLT and EGF also decreases the body height and body weightindex.Research on correlation between cardiovascular system and blood plasma MLT and EGF shows thatdecrease of blood plasma MLT causes in increased arterial pressures in both sexual groups, decreasedEGF in women causes decreased arterial pressure.Correlation study between skin main characteristics and blood plasma MLT and EGF shows thatdecreased blood plasma EGF in men resulted in decreased skin wrinkles, porosity, elasticity and skin aging index, in women decreased skin pigmentation and elasticity, and increased skin wrinkles, porosity and aging index in women.Research study of correlation between biological age and adaptive capacity assessment with the blood plasma MLT and EGF shows that decreased MLT and EGF in men results in increased biological age characteristics. In other words, the early aging is caused.The logistical regression analyses made using blood plasma melatonin, skin porosity, biological age,body height and sex as the risk parameters of Pearson coefficient and chi-squared parameter. Above model resulted in skin porosity and blood plasma MLT’s are becoming independent variable assessing the skin aging.Conclusions:1. The decreased MLT and EGF’s are resulted in increased body weight, body height and body weight index in men and decreased body height, body weight index in women.2. Decreased blood plasma MLT resulted in increased arterial pressure in both sexual groups and decreased EGF resulted in decreased arterial pressure in women.3. The decreased blood plasma MLT and EGF results in decreased skin wrinkles, porosity, elasticityand skin aging parameter with the increased skin pigmentation in men, as it results in decreasedskin pigmentation, elasticity and skin porosity parameters with the increased skin aging degree in women.4. When epidermal growth factor and blood plasma melatonin is decreased in men it results in increased biological age, but depends directly to the adaptive capacity assessment.5. Skin porosity and blood plasma melatonin were becoming independent variable to assess skin aging.
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BACKGROUND: Skin types vary, making it difficult to identify them at a glance. To effectively understand skin type, analysis based on a questionnaire could be helpful. OBJECTIVE: The purpose of this study was to identify the accuracy and effectiveness of the Baumann skin type questionnaire (BSTQ) compared with an interview with a dermatologic specialist. In addition, we aimed to identify differences in skin type proportions according to age and develop a modified BSTQ. METHODS: Subjects included 202 women (19~64 years of age) who visited the dermatologic clinic of our hospital. They completed both the BSTQ and an interview with a dermatologic specialist. A modified BSTQ was developed by removing similar and racial questions and adjusting grading scores. RESULTS: The agreement between skin type proportions analyzed by the BSTQ and an interview was not reasonable (κ=0.428, 95% confidence interval [CI]: 0.363~0.493). There was a correlation between the proportion of dryness and age (R2=0.029, p<0.05). However, other skin type proportions (sensitivity, pigmentation, and wrinkles) were not significantly correlated with age. The modified BSTQ showed substantial agreement with the BSTQ in skin type proportions (κ=0.691, 95% CI: 0.641~0.740). CONCLUSION: We identified the skin types of Korean women of various ages using the BSTQ and an interview. Furthermore, the modified BSTQ might be helpful for accurately recognizing skin types.
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Female , Humans , Pigmentation , Skin , SpecializationABSTRACT
Objective To explore the effect and complication of diode laser and long-pulsed alexandrite laser for hair removal in different skin type.Methods A total of 1061 patients (1741 sites) were divided into 2 groups by skin type:one group were treated with diode laser,with wave length of 810 nm,and pulse width of 400 ms,with 12 mm × 10 mm spot size; another group were treated with long-pulsed alexandrite laser,with wave length of 755 nm,of pulse width of 20 ms,with 12.5 mm spot size,50-60 days intermitted between each treatment.Results The effect of hair removal by two lasers in different skin type was without divergence,but to darker skin,complication was lower when treated by diode laser.Conclusions The effect of hair removal by two lasers in different skin type is similar,but diode laser on hair removal is much safer to dark skin.
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Introducción: el concepto de precancerosis denomina los procesos morbosos que después de un tiempo más o menos largo se transforman de forma segura o probable en un tumor maligno. Objetivo: determinar el comportamiento de algunas variables clínico-epidemiológicas en pacientes con diagnóstico de lesiones precancerosas. Métodos: se realizó estudio descriptivo transversal en pacientes con dermatosis precancerosas atendidos en el periodo 2010-2011 en la Consulta de Dermatología del Hospital Clínico Quirúrgico Lucía Íñiguez Landín de Holguín. El universo estuvo constituido por los 3 584 pacientes remitidos a la consulta desde las áreas de salud de la provincia Holguín con diagnóstico clínico de lesiones precancerosas. La muestra se conformó con 721 pacientes mayores de 20 años que dieron su consentimiento informado; se excluyeron pacientes con diagnóstico de precancerosis obligadas. Los factores de riesgo estudiados fueron exposición solar, hábito de fumar, piel actínica, fotoenvejecimiento y dermatosis asociadas. Resultados: las dermatosis precancerosas predominantes fueron la queratosis actínica (41,7%) y la atrofia senil (44,9%). Las áreas fotoexpuestas fueron las localizaciones más frecuentes. Las enfermedades asociadas más frecuente fueron otras dermatosis y enfermedades crónicas no trasmisibles. Se distinguieron entre los factores de riesgo la exposición solar (70,3%), la piel actínica (41,3%) y el fotoenvejecimiento (38,6%). Conclusiones: los tipos de dermatosis más frecuentes encontradas fueron la atrofia senil y la queratosis actínica; así como los fototipos I y II de la piel, asociada con factores de riesgo como la exposición prolongada al sol, la piel actínica y el fotoenvejecimiento.
Introduction: the concept of precancerosis included the disease processes that after a longer or shorter period could probably become in a malignancy Objective: to determine the behavior of some clinical and epidemiological variables in patients with precancerous lesions. Methods: a cross-sectional descriptive study of patients with precancerous dermatoses treated from January 2010 to December 2011 in the Dermatology Consultation of Lucia Iñiguez Landin Surgical Hospital of Holguin was carried out. The universe comprised 3 584 patients referred for consultation from health areas of Holguín province with a clinical diagnosis of precancerous lesions. The sample consisted of 721 patients older than 20 years who gave informed consent; patients with a diagnosis of required precancerosis were excluded. The risk factors studied were sun exposure, smoking, actinic skin, photo aging and associated dermatoses. Results: the predominant precancerous dermatoses were actinic keratosis (41.7%) and senile atrophy (44.9%). The exposed areas were the most frequent. The most frequent associated diseases were other dermatoses and non-communicable chronic diseases. The outstanding risk factors were sun exposure (70.3%), actinic skin (41.3%) and photo aging (38.6%). Conclusions: the most common types of skin diseases found were senile atrophy and actinic keratosis as well as the types I and II of the skin, associated with the following risk factors: prolonged sun exposure, actinic skin and photo aging.
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Introduction: Vitamin D plays an important role in maintaining the physical health as well as the performance of athletes. This cross-sectional analytical study was conducted to determine vitamin D intake, sun exposure and skin types of both indoor and outdoor Malaysian athletes in the National Sports Institute, Bukit Jalil. Method: A total of 28 indoor (badminton, shooting, wushu and fencing) and 36 outdoor (athletics, football and hockey) athletes were recruited for this study. The dietary vitamin D intake was estimated using Vitamin D-specific Food Frequency Questionnaire (FFQ). The Sun Exposure Index (SEI) was calculated from Seven-day Sun Exposure Record while the skin types of athletes were determined using Fitzpatrick Skin Typing Questionnaire. Results: The mean age of the athletes was 21.02±4.11 years and their mean Body Mass Index (BMI) was 22.20±2.22 kg/m2. The mean body fat percentage of outdoor athletes was significantly lower than indoor athletes (p<0.001). Forty two athletes (65.6%) met the recommended nutrient intake (RNI) value for vitamin D and the outdoor athletes had significantly greater amount of vitamin D intake compared to RNI (p<0.05) and the indoor athletes (p<0.05). The indoor athletes spent significantly less time outdoor per day (p<0.05) and had lower SEI per day (p<0.05) than outdoor athletes. Most of the indoor athletes (53.6%) had type II of Fitzpatrick skin type while the outdoor athletes (47.2%) had type III of Fitzpatrick skin type. Conclusion: The outdoor athletes had higher intake of vitamin D and more sun exposure than indoor athletes. There is a need to ensure the adequacy intake of vitamin D among indoor athletes.
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Objective To assess the efficacy and safety of 800 nm diode laser for removing unwanted hair of Ⅲ-Ⅴ skin type.Methods A total of 114 patients were treated with 800 nm diode laser on 234 sites.Four sessions were performed at an interval of 6-8 weeks.Percentage of hair reduction was evaluated 3 months after each session by comparing the terminal hair count to the baseline values.Follow-up was performed 6-8 months after the last session.In addition,subjective satisfaction of physicians and patients was evaluated according to a four-grade scale and the satisfaction rates were calculated.Results After fouth session,97.01％ of patients had more than 40 ％ hair reduction,and 83.33 ％ patients had more than 60 ％ hair reduction.Hyperpigmentation was observed on 15 (6.41％) sites,and disappeared after 6-8 months follow-up.The satisfactory rates of the physicians and the patients were 98.25 ％ and 96.12 ％,respectively,with no statistical difference (x2 =3.33,P＞0.05).Conclusions 800 nm diode laser for removing unwanted hair of Ⅲ-Ⅴ skin type is a safe and effective treatment option for hair removal,with relatively less side effect.
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Este artigo descreve os quatro parâmetros que embasam o Sistema Baumann de Classificação da Pele (BSTS), definindo e resumindo as características dos 16 tipos de pele.
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Background Hori’s naevus is an acquired bilateral naevus of Ota-like macules (ABNOM). It was first reported by Hori et al in 1984. It is common among Asians and has a female preponderance. Hori’s naevus is characterised by blue-brown macules typically on the malar region of the face. Objectives To evaluate the clinical characteristics of patients with Hori’s naevus seen at Hospital Kuala Lumpur and the efficacy of Qswitched neodynium-yttrium-aluminium-garnet (Nd:YAG) laser in the treatment of this condition. Method A retrospective analysis of 16 patients diagnosed clinically with Hori’s naevus and treated with Q-switched Nd:YAG laser was carried out. Patient’s demographic data and clinical characteristics, response to Q-switched Nd:YAG laser, complications and recurrence were reviewed. Results A total of 16 patients diagnosed clinically with Hori’s naevus and treated with Q-switched Nd:YAG laser were reviewed. Fifteen of the patients were female with one male. Their ages ranged from 33-61 years old (mean age = 47). Nine of these patients were Chinese with seven Malays. All had Fitzpatrick skin phototype IV. The age of onset ranged from 15-45 years old. The most common clinical presentation was bilateral brown macules on the malar region of the face. Eleven patients received treatment with Q-switched 1064nm Nd:YAG and five combination treatment with Q-switched 532nm Nd:YAG followed by 1064nm laser. Two patients were lost to follow up after a single treatment. After a single treatment, 13 patients graded their clinical response as ‘poor’ (0-25% improvement) and 1 as ‘fair’ (26-50% improvement). Six patients received a total of two treatments of whom 4 graded their response as ‘fair’ (26-50% improvement) and 2 as ‘good’ (51-75% improvement). Two patients who received a total of four treatments graded their responses as ‘good’ and ‘excellent’ (76-100% improvement) respectively. 10 patients had significant hyperpigmentation post laser treatment. However, none reported any recurrences. Conclusion There is no difference in pigment clearance between concurrent use of Q-switched 532nm Nd:YAG laser followed by 1064nm laser and Q-switched 1064nm Nd:YAG laser for Hori’s naevus. However, there is only minimal improvement after a single treatment, and multiple sessions are required to achieve satisfactory improvement. Post inflammatory hyperpigmentation was the main complication seen.
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Background Naevus of Ota was first described in 1939 by Ota M. It is characterized by a bluish-gray mottled hyperpigmentation in the distribution of the trigeminal nerve. It affects between 0.014 - 0.6% of the Asian population. It is not only physically disfiguring but may be associated with tremendous psychosocial impact on the patient. The aim of the study is to determine the demographic data of local patients with naevus of Ota, their response to treatment with Q-switched 1064nm Nd:YAG laser, complications and recurrence. Materials and Methods A retrospective analysis of all patients with naevus of Ota treated with Q-switched 1064nm Nd:YAG laser between January 1998 to December 2007 was conducted at the dermatology clinic, Kuala Lumpur Hospital. Patients’ demographic data, clinical characteristics, response to Q-switched 1064nm Nd:YAG laser and the complications were reviewed. Results A total of 50 patients with naevus of Ota were treated with Q-switched 1064nm Nd:YAG laser. There were 42 female and 8 male patients with a F : M ratio of about 5:1. The mean age of presentation was 31 years old (11-60 years). More than half were Chinese patients (56%) followed by Malays (38%), Indian (2%) and others (4%). Seventy four percent of the patients had Fiztpatrick skin-type IV and the rest skin type V. Ninety two percent of the patients had unilateral trigeminal dermatomal involvement while 8% had bilateral trigeminal dermatomal involvement. Of the 15 patients who were referred to the ophthalmologist, 10 were found to have scleral involvement and none had glaucoma. Patients who had 2 treatments (13 patients) did not have any significant lightening of their lesions. In the remaining 37 patients who had 3 sessions (mean = 5.7, range 3 -15 sessions), 9 patients (24.3%) reported the response as good (51-75% lightening); 17 patients (45.3%) as excellent (>75% lightening) and 8 patients (22%) had near complete lightening (>90%). None reported any complications or recurrence. Conclusion Q-switched 1064nm Nd:YAG laser is an effective and safe treatment modality for patients with naevus of Ota.
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BACKGROUND: In planning narrow band UVB (NBUVB) phototherapy protocol, assessing a minimal erythema dose (MED) of NBUVB may be essential to gain optimal therapeutic results. However, there are few data regarding to the MED of NBUVB in Koreans and the results are variable according to skin types and photosensors. OBJECTIVE: We assessed MED of NBUVB in psoriasis patients by a photometer designed for NBUVB phototesting, the relationship of skin type and ultraviolet responses. METHODS: Forty psoriasis patients were phototested on their backs with newly developed Waldmann UV meter(R)(Waldmann Co. Germany) for NBUVB phototesting. The MED was investigated by irradiating several NBUVB doses ranging from 200 mJ/cm2 to 1500 mJ/cm2 and then was judged visually 24 hours after. RESULTS: 1.The median and mode value of MED of NBUVB in Korean psoriasis patients were 950 mJ/cm2 (35%). 2. Skin type was well correlated with the MED. CONCLUSION:The MED value of NBUVB in our study may be useful data to set the phototherapy protocol. Skin types are related with MED value and the study is more required to know the exact relationship.
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Humans , Erythema , Phototherapy , Psoriasis , SkinABSTRACT
BACKGROUND: The Fitzpatrick skin type has been a simple and useful method to categorize cutaneous sensitivities to ultraviolet radiation. OBJECTIVE: In this study, we intended to know the distribution of Fitzpatrick skin type in Korean by interview method using questionnaire. METHODS: A total of 1296 Koreans from various districts were included in this study. Each subject was interviewed about their skin reactions to ultraviolet radiation and determined their skin type by interview method. To evaluate the statistical significance, we used generalized logit model. RESULTS: 1. The order of frequency of skin type was type III(48.8%), IV(22.2%), V(17.8%) by the interview method, with the sun sensitive categories(type I and type II) reported for 11.2%. 2. The skin type III was the predominant skin type in both men and women. However, skin type IV was found more frequently in men and it was statistically significant. 3. There is a tendency that frequency of skin type IV and V were increasing with advancement of age. 4. The Fitzpatrick skin type has some relationship with each individual`s occupation, the degree of sun exposure and their own skin color in Korean. CONCLUSION: This study included relative large numbers of subjects from various districts in Korea. It can be used as basic data for various studies related to cutaneous reactions to ultraviolet radiation.
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Female , Humans , Male , Korea , Logistic Models , Occupations , Skin , Solar System , Surveys and QuestionnairesABSTRACT
BACKGROUND: The Fitzpatrick skin type has been a simple and useful method to categorize cutaneous sensitivities to ultraviolet radiation. OBJECTIVE: In this study, we intended to know the distribution of Fitzpatrick skin type in Korean by interview method using questionnaire. METHODS: A total of 1296 Koreans from various districts were included in this study. Each subject was interviewed about their skin reactions to ultraviolet radiation and determined their skin type by interview method. To evaluate the statistical significance, we used generalized logit model. RESULTS: 1. The order of frequency of skin type was type III(48.8%), IV(22.2%), V(17.8%) by the interview method, with the sun sensitive categories(type I and type II) reported for 11.2%. 2. The skin type III was the predominant skin type in both men and women. However, skin type IV was found more frequently in men and it was statistically significant. 3. There is a tendency that frequency of skin type IV and V were increasing with advancement of age. 4. The Fitzpatrick skin type has some relationship with each individual`s occupation, the degree of sun exposure and their own skin color in Korean. CONCLUSION: This study included relative large numbers of subjects from various districts in Korea. It can be used as basic data for various studies related to cutaneous reactions to ultraviolet radiation.
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Female , Humans , Male , Korea , Logistic Models , Occupations , Skin , Solar System , Surveys and QuestionnairesABSTRACT
BACKGROUND: Human skin color shows variations throughout life and many extrinsic and intrinsic factors influence melanogenesis. The characteristics of skin pigmentation have been studied largely in white Caucasians. However, pigmentary changes due to various regulatory factors may be different in Orientals. OBJECTIVE: We observed the variations in skin color due to aging, seasonal changes and gender differences in Koreans with skin type IV or V. METHODS: Skin pigmentation was measured at five body sites (buttock, glabella, V-neck area, inner arm, and dorsal forearm) using skin reflectance spectroscope in 109 subjects in winter and summer. RESULTS: Constitutive pigmentation of the buttock was at the highest level in the first decade of life. It then decreased during the next two decades. This decreased level was maintained after the third decade. The pattern of pigmentation changes of other four sites with aging was similar to that of the buttock. Gender differences were significant except in the first decade. Seasonal change of pigmentation level was observed in dorsal forearm. Interestingly, our study did demonstrate some differences from the observations in Caucasians. We found that facultative pigmentation in Koreans was not increased with aging, so the sun exposure index was not reliable as a measure of cumulative lifetime UV exposure. CONCLUSION: These differences between races could imply that genetically determined basal skin color has important effects on characterizing later responsiveness to UV lights and sex hormones. Understanding these differences in skin pigmentation would be helpful in treating pigmentary diseases and skin cancers, and in studying the regulatory mechanisms of melanogenesis.
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Humans , Aging , Arm , Buttocks , Racial Groups , Forearm , Gonadal Steroid Hormones , Intrinsic Factor , Pigmentation , Seasons , Skin Neoplasms , Skin Pigmentation , Skin , Solar System , Ultraviolet RaysABSTRACT
BACKGROUND: Although deleterious effects of sunlight have been increased recently, the surveillance of the attitudes toward sun-exposure and the behavioral aspect of using sunscreens in Koreans has hot been cammied out. OBJECTIVE: Our purpose was to evaluate the attitude toward the harmfulness of sun-exposure and behaviors of using sunscreens in Korea. METHOD: Five hundred and fifty-two subjects were surveyed to assess the attitude toward sun-exposure, as well as the subjects' knowledge about, and the use of sunscreens. Underlying data including demographic data, skin colors, skin types, occupation, and sun-exposure, were obtained. RESULTS: Fifty-four percent of subjects believed that sun-exposure is bad for their skins, but, on the contrary, 12.5% believed it to be beneficial. Fifty-two percent of subjects used sunscreens. Almost all subjects(93.8%) knew why to use sunscreens but 62.7% of subjects did not know the meaning of sun protective factors(SPF). Women, indoor workers, subjects older than 40 yearsold, with less sun-exposed, fair colored skin, or with skin type I, II, III tended to know the deleterious effects of sunlight and the meaning of SPF and used more sunscreen. CONCLUSION: High risk population - men, outdoor workers, subjects less than 40 yearsold, with more sun-exposed, dark colored skin, or skin type VI, V could be targeted with campaigns that promote attitudinal and behavioral changes.
Subject(s)
Female , Humans , Male , Korea , Occupations , Skin , Solar System , Sunlight , Sunscreening AgentsABSTRACT
BACKGROUND: There are many predictors of sensitivity to UVR, but controversies exist about their objectivity, correlation between them, and applicability to various races. OBJECTIVE: In 42 healthy volunteers, we assessed the validaty of dose response angle of erythe ma(DRAE) and delayed tanning(DRADT) after UVB irradiation, and also evaluated the correlation hetween dose-response angb s and other predictors of UV sensitivity. METHODS: We measured erythema and melanin index using reflectance spectrophotometer aft,er irradiation of UVB on the back of 42 males. When the erythema index and melanin index were plotted against UV doses for each patient, a dose response curve was obtained. Linear regression analysis was used to calculate the slope of those curves for erythema and delayed tanning, which were called DRAE and DRADl respectively. Also we checked predictots of UV sensitivity such as skin type, MED, MMD, consiitutional and facultative skin color, then analyzed the relation be tween dose response angles and other predictors. RESULTS: Statistically significa it linear regression lines were obtained from 41 subjects regarding to erythema and frorn 31 subjects regarding to delayed tanning. As for the relationship he tween the pvedictors of UV senitivity, only the MED correlated well with DRAE. CONCLUSION: We found that dose response angles, especially DRAE, were an objective and adequate predictor of cutaneous LJV sensitivity, but could not find validity of skin type and skin color in Koreans. A more organized study with a larger number of subjects is needed to clarify the usefulness of the predictors.