PHA 5% EXFOLIATING LIP SERUM. Key Ingredients: Gluconolactone (Polyhydroxy Acid): Helps gently exfoliate away dead skin, for a smoother lip appearance.. Ectoin: Supports the skin barrier to help retain moisture and protect against external aggressors.. Glycerin: Helps restore lip hydration to support the natural exfoliation process.. Alpha Hydroxy Acids (Citric Acid, Malic Acid and Tartaric Acid): A combination of 3 alpha-hydroxy acids support exfoliation, while also imparting a sour taste to the formula.. Daucus Carota Sativa (Black Carrot): An extract of black carrot rich in anthocyanins, known for their antioxidant properties. *All ingredients in PHA 5% Exfoliating Lip Serum are considered food grade. Research Results: Gentle Exfoliation: Gently exfoliates and smooths lips while respecting the barrier. Smoothness: Promotes skin renewal for smoother-looking lips.. Shine: Gives lip a more radiant shine. Hydration: Increases moisture content by 30%* for plumper lips even when bare*. *Clinical testing on 22 subjects after using product 3x/week for 2 weeks.. :