Redken Acidic Grow Full Spray Treatment delivers a powerful boost to thinning, fragile hair with an expert-level, pH-balanced formula engineered to fortify weak strands and elevate root density. This lightweight leave-in treatment energizes the scalp, hydrates at the foundation, and builds fuller, stronger-looking hair that performs with rugged resilience. Thin or fragile hair Lightweight daily spray Who Is It For? All hair types Ideal for low-density hair What Does It Do? Builds root-lifting volume Strengthens weak strands Hydrates and rebalances scalp Reduces visible breakage Promotes fuller, denser-looking hair How Do You Use It? On damp hair, mist directly onto scalp by parting hair Mist at least 6 inches away from the scalp Work product through hair with a comb Do not rinse Style as usual