Skin Surface pH in Acne Vulgaris: Insights from an Observational Study and Review of the Literature.

Recurrent and chronic course of acne vulgaris, despite effect-proven therapies, point to an underfocused aspect in its pathogenesis and management. This study aims to assess in subjects with and without acne, the skin surface pH, a parameter that cumulatively represents functioning of various units of skin, including the barrier. A total of 200 patients with acne and 200 age- and sex-matched controls were included.