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Randomized clinical efficacy of superficial peeling with 85% lactic acid versus 70% glycolic acid / Estudo randomizado da eficacia clinica dos peelings superficiais de acido lactico 85% versus acido glicolico 70%
Prestes, Paula Souza; Oliveira, Marcia Motta Maia de; Leonardi, Gislaine Ricci.
  • Prestes, Paula Souza; Methodist University of Piracicaba. Health Sciences College. Piracicaba. BR
  • Oliveira, Marcia Motta Maia de; Methodist University of Piracicaba. Health Sciences College. Piracicaba. BR
  • Leonardi, Gislaine Ricci; Methodist University of Piracicaba. Health Sciences College. Piracicaba. BR
An. bras. dermatol ; 88(6): 900-905, Nov-Dec/2013. tab, graf
Article in English | LILACS | ID: lil-699000
ABSTRACT

BACKGROUND:

Peeling is a procedure which aims to accelerate the process of skin exfoliation.

OBJECTIVES:

Development of formulations containing lactic acid at 85% or glycolic acid at 70% and the evaluation of these formulations on clinical efficacy in reduction of fine wrinkles.

METHODS:

Preliminary stability tests were carried out and an in vivo study was performed with three groups with 9 representatives each. One was the control group, which used only sunscreen; another one used lactic acid+sunscreen, and the last group used acid glycolic+sunscreen. Clinical efficacy was assessed with a CCD color microscope, through the digitization of images before and after treatment. The applications were carried out by a dermatologist, once a mont h every 30 days, during 3 months. The area with wrinkles was calculated by planimetry point counting, in accordance with Mandarin-de-Lacerda.

RESULTS:

The formulations were stable in the visual and Ph evaluation. There was no improvement in the control group; for lactic acid, there was significant improvement after the second peeling application on the outer lateral area of the right eye and after the third application on the outer lateral area of the left eye. For the glycolic acid group, there was significant improvement in the outer lateral area of the left eye after the first application, and of the right eye region, after three applications. The formulations used must be kept under refrigeration and should be manipulated every 30 days.

CONCLUSIONS:

Both peelings were effective in reducing fine wrinkles of the outer lateral eye area after three applications (p≤0.05%). It was observed that peeling efficacy in the external-lateral region of one eye might be different compared with that in skin of the external-lateral region of the other eye, relative to the speed of skin improvement. .
RESUMO
FUNDAMENTOS Peeling visa a acelerar o processo de esfoliação da pele.

OBJETIVOS:

Desenvolver formulações contendo ácido láctico a 85% ou ácido glicólico a 70% e avaliar sua eficácia clínica na redução de rugas finas.

MÉTODOS:

Testes preliminares foram efetuados e estudo in vivo foi realizado em três grupos com nove representantes cada, separados de forma randomizada. Um grupo foi controle, utilizando apenas fotoprotetor; outro utilizou ácido láctico e fotoprotetor; o último usou ácido glicólico e fotoprotetor. Para eficácia clínica, empregou-se microscópio CCD color, digitalizando-se as imagens do pré e do pós-tratamento. As aplicações foram realizadas por médica dermatologista uma vez por mês, a cada 30 dias, durante três meses. A área com traços de ruga foi calculada pela planimetria por contagem de pontos.

RESULTADOS:

As formulações foram estáveis na avaliação visual e de pH. Não houve melhora no grupo controle; para o grupo do ácido láctico, houve melhora significativa após a segunda aplicação do peeling na região lateral externa do olho direito e após a terceira aplicação na região lateral externa olho esquerdo. Para o grupo do ácido glicólico, houve melhora significativa na região lateral externa olho esquerdo após a primeira aplicação e, depois de três aplicações, na região lateral externa do olho direito. As formulações magistrais empregadas no estudo devem ser mantidas sob refrigeração e manipuladas a cada 30 dias.

CONCLUSÕES:

Tanto o peeling de ácido láctico quanto o de ácido glicólico foram eficazes na diminuição de rugas finas da região lateral externa dos olhos após ...
Subject(s)


Full text: Available Index: LILACS (Americas) Main subject: Skin Aging / Chemexfoliation / Lactic Acid / Glycolates / Keratolytic Agents Type of study: Controlled clinical trial Limits: Adult / Female / Humans Language: English Journal: An. bras. dermatol Journal subject: Dermatology Year: 2013 Type: Article Affiliation country: Brazil Institution/Affiliation country: Methodist University of Piracicaba/BR

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Full text: Available Index: LILACS (Americas) Main subject: Skin Aging / Chemexfoliation / Lactic Acid / Glycolates / Keratolytic Agents Type of study: Controlled clinical trial Limits: Adult / Female / Humans Language: English Journal: An. bras. dermatol Journal subject: Dermatology Year: 2013 Type: Article Affiliation country: Brazil Institution/Affiliation country: Methodist University of Piracicaba/BR