OGX ProGrowth + Peptide Clarifying Shampoo Gentle Exfoliating Shampoo Supports Natural Hair Growth by Removing Scalp Build-Up 1.5% Mandelic Acid LipiPro Shield™ 385ml. EXFOLIATE & CLARIFY: This OGX ProGrowth + Peptide Clarifying Shampoo with 1.5% Mandelic Acid gently exfoliates the scalp to remove buildup, unclog follicles, and support natural hair growth with every wash.