Redken Acidic Grow Full System provides the fullness of +5,000 hair fibers.* This lightweight, nourishing conditioner gently hydrates your scalp and nourishes thin, flat hair leaving it full, soft, and revitalized. BEST FOR: Thin, flat hair Hair prone to hair fall and breakage from brushing Suitable for all Color-Treated Hair KEY BENEFITS Instantly fuller, thicker looking hair* 91% of GLP-1 users agreed hair feels thicker** 2X stronger hair*** 2X less breakage**** Clinically-tested to hydrate the scalp***** *When using system of shampoo, conditioner, serum, and spray​ **In a consumer test when using system of shampoo, conditioner, serum, and spray; tested with GLP-1 users experiencing hair loss. ***System of shampoo, conditioner, serum, and spray vs. non-conditioning shampoo​ ****Tested to reduce breakage. System of shampoo, conditioner, serum, and spray vs. non-conditioning shampoo *****​​When using system of shampoo, conditioner, and serum. | Redken - Acidic Grow Full Densifying Conditioner For Thin, Flat Hair - 1 l / 33.8 fl oz