This column features weekly tips and advice from a revolving cast of industry leaders, on hand to discuss your beauty dilemmas, from blemishes to Botox. The following query was culled from a private stock, but we’ll be accepting readers’ questions soon.
Is it true that exfoliants with granules are too harsh for the face and that [...]

It’s unclear when the cult of P50 started, although we’d have to assume it was around the time that Biologique Recherche first released the wonder product, which has become the cornerstone of its 40-year-old line. With active ingredients including usnic acid, lactic acid, witch hazel, onion extract, myrrh extract, and sage extract, the toner-cum-astringent -cum-”balancing [...]