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Critical assessment of the pH of children's soap / Avaliação crítica do pH dos sabonetes infantis
Mendes, Bruna Rafaela; Shimabukuro, Danielle Midori; Uber, Marjorie; Abagge, Kerstin Taniguchi.
  • Mendes, Bruna Rafaela; Universidade Federal do Paraná. Curitiba. BR
  • Shimabukuro, Danielle Midori; Universidade Federal do Paraná. Curitiba. BR
  • Uber, Marjorie; Universidade Federal do Paraná. Curitiba. BR
  • Abagge, Kerstin Taniguchi; Universidade Federal do Paraná. Curitiba. BR
J. pediatr. (Rio J.) ; 92(3): 290-295, tab, graf
Article in English | LILACS | ID: lil-785073
ABSTRACT
Abstract

Objective:

To evaluate the pH value of children's antibacterial soaps and syndets used in children's baths and verify whether there is information regarding pH on the product label.

Methods:

Quantitative, cross-sectional, analytical observational study that included ninety soap samples, both in bar and liquid presentations, as follows 67 children's soap (group 1), 17 antibacterial soaps (group 2), and 6 syndets (group 3). Each sample had its pH measured after 1% dilution. In addition to descriptive statistics, the Pearson-Yates chi-squared test and Student's t-tests were applied, considering the minimal significance level of 5%. The Wilcoxon-Mann-Whitney test, Fisher's exact test, and the Kruskal-Wallis test were used for inferential statistics.

Results:

The pH levels varied considerably between liquid and bar presentations, with lower levels (4.4-7.9) found for the liquids (p < 0.05). Syndets showed pH levels close to the ideal (slightly acid) and the antibacterial soaps showed the highest pH levels (up to 11.34) (p < 0.05). Only two of the soaps included in the study had information about their pH levels on the product packaging.

Conclusions:

Knowledge of the pH of children's soap by doctors and users is important, considering the great pH variability found in this study. Moreover, liquid soaps, and especially syndets, are the most recommended for the sensitive skin of neonates and infants, in order to guarantee skin barrier efficacy.
RESUMO
Resumo

Objetivos:

Avaliar o pH dos sabonetes infantis, antibacterianos e sindets (syntetic detergents) habitualmente usados em crianças, bem como verificar se há no rótulo desses produtos informação sobre seu pH.

Métodos:

Estudo observacional, analítico, transversal e quantitativo, que incluiu 90 sabonetes nas apresentações em barra e líquida, 67 infantis (grupo 1), 17 antibacterianos (grupo 2) e 6 sindets (grupo 3). Procedeu-se à mensuração do pH das amostras após diluição a 1%. Além da estatística descritiva, foram usados os testes de qui-quadrado Persons/Yates e t de Student, com nível de significância mínimo de 5%. Para a estatística inferencial, foram usados os testes de Wilcoxon-Mann-Whitney, exato de Fisher e Kruskal-Wallis.

Resultados:

O pH variou consideravelmente entre as formas líquida e em barra, com pHs menores (de 4,4 a 7,9) nos líquidos (p < 0,05). Os sindets mostraram pHs próximos ao ideal (levemente ácidos) e os antibacterianos apresentaram os maiores pHs (até 11,34) (p < 0.05). Apenas dois dos sabonetes analisados apresentavam no rótulo a indicação do pH.

Conclusões:

A observação do pH dos sabonetes infantis pelos médicos e usuários é importante, haja vista a grande variabilidade de valores de pH encontrados. Além disso, os sabonetes líquidos, e especialmente os sindets, são os mais recomendados para uso em recém-nascidos e lactentes com pele sensível, de forma a garantir a eficácia da barreira cutânea.
Subject(s)


Full text: Available Index: LILACS (Americas) Main subject: Soaps / Detergents / Hydrogen-Ion Concentration / Anti-Bacterial Agents Type of study: Observational study / Prevalence study / Risk factors Limits: Humans / Infant / Infant, Newborn Country/Region as subject: South America / Brazil Language: English Journal: J. pediatr. (Rio J.) Journal subject: Pediatrics Year: 2016 Type: Article Affiliation country: Brazil Institution/Affiliation country: Universidade Federal do Paraná/BR

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Full text: Available Index: LILACS (Americas) Main subject: Soaps / Detergents / Hydrogen-Ion Concentration / Anti-Bacterial Agents Type of study: Observational study / Prevalence study / Risk factors Limits: Humans / Infant / Infant, Newborn Country/Region as subject: South America / Brazil Language: English Journal: J. pediatr. (Rio J.) Journal subject: Pediatrics Year: 2016 Type: Article Affiliation country: Brazil Institution/Affiliation country: Universidade Federal do Paraná/BR