“The Biologique Recherche Lotion P50 Original 1970 is a beauty lover’s cult favorite that I have used and loved for years. It combines niacinamide, AHAs, and PHAs for an effective, yet gentle exfoliation. I use chemical exfoliants to eliminate dullness and improve my skin texture. It also maintains the proper pH of the skin’s acid mantle (pH – 5.5).”

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