Sensitive skin in Brazil and Russia: An epidemiological and comparative approach

Abstract

Sensitive skin is characterized by the occurrence of sensations of tingling, prickling, heat, burning, pain or itching and, on occasion, erythema, in response to multiple physical, chemical or hormonal factors that do not have irritant properties by themselves. We chose here to evaluate sensitive skin in two countries with very different populations, climates and lifestyles: Russia and Brazil. Representative nationwide samples of the Russian and Brazilian populations aged 15 and over were selected. The same methodology was used: the individuals were questioned by telephone and selected as per the quotas method (sex, age, householder profession, rural/urban location and region). In the Brazilian population, 22.3% versus 45.7%, in favour of women, reported having a "sensitive" skin. Significant differences were only observed by geographic residence. In the Russian population, 25.4% versus 50.1%, in favour of women, reported having a "sensitive" skin. Significant differences were observed in skin sensitivity according to social-professional categories, region of residence and subject age. The same results were found in both populations for sensitivity to cosmetics and food intake. Respondents with rather sensitive or very sensitive skin are 2 or 3 times more reactive to climatic, environmental factors, cosmetics and food intake.