OGX® ProGrowth + Peptide Shampoo gently exfoliates the scalp to support natural hair growth. With 1.5% Mandelic Acid, it removes up to 98% of buildup and unclogs follicles. Developed with trichologists, this clarifying formula supports natural hair growth by removing build-up & impurities to promote visibly thicker, fuller-looking hair. Ideal for fine or thinning hair, Use regularly to refresh the scalp and prep hair for the complete OGX® ProGrowth + Peptide system. *Instrumental results with full routine vs. untreated hair