Unlock the secret to visibly fuller, denser hair with the revolutionary Redken Acidic Grow Full System Serum. Specifically formulated for individuals struggling with thin or flat hair, this lightweight, pH-balanced serum is your essential treatment to achieve thicker-looking strands and a healthier scalp environment. Scientifically proven to reduce hair fall due to breakage from brushing, this powerful serum works to minimize fragility, allowing your hair to look and feel its maximum potential. Say goodbye to the look of limp hair and embrace the appearance of renewed volume and strength. The magic of this intensive scalp and hair serum lies in its expert blend of AZELAIC ACID and a 5% Hydrating Complex. This potent, fast-absorbing formula works deep to deliver triple benefits: instantly promoting a fuller-looking and thicker-looking hair appearance, rebalancing and hydrating the scalp, and providing significant strengthening benefits that lead to up to 2x less breakage*. Incorporate this daily serum into your routine to transform the quality and density of your fine or flat hair. For optimal, lasting results, use the Redken Acidic Grow Full System Serum as part of the complete NEW Acidic Grow Full System, which includes the shampoo, conditioner, and spray. This comprehensive system is engineered to rebalance the scalp with essential hydration while instantly creating denser-looking hair. By coating the hair fiber and reinforcing its structure, the system ensures your hair not only looks and feels fuller but remains strong and healthy as it grows long as usual. Maximize your hair's volume and resilience today. *Based on a high repetition, instrumental brushing test vs classical shampoo on bleached hair