The Iconic Exfoliating Toner for Mature or Dull Skin. Lotion P50V 1970 by Biologique Recherche is a vitamin-enriched exfoliating lotion formulated to gently balance, purify, and strengthen skin showing early signs of aging or fatigue. This cult-classic formula contains phenol, offering potent exfoliating action to refine texture, regulate oil, and brighten the complexion while supporting elasticity and resilience.