Renpure Apple Cider Vinegar Plant - Based* Scalp Serum clarifies and refreshes your scalp with a plant-based formula, designed to penetrate the hair cuticle and enhance shine, hydration, and smoothness for healthier-looking hair.After shampooing, separate your hair into sections and apply the serum directly to the scalp. Massage thoroughly to ensure even distribution, then rinse before conditioning for refreshed, clarified, and hydrated hair.