agréable au sens propre seulement can i mix glycolic acid with niacinamide Mauvais fonctionnement Mixte présent
Help! I've been using the glycolic acid (PM), niacinamide (AM), and AHA/BHA (2-3x a week before PM shower) and love them all but I just added the other two (retinol&hyaluronic) in and
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