Redken Acidic Grow Full System provides the fullness of +5,000 hair fibers.* The instant densifying leave-in spray is a lightweight leave-in treatment formulated with 5% Densifying Complex that delivers instant fullness while protecting hair from heat styling up to 450°F.
*When using system of shampoo, conditioner, serum, and spray
**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.
*****In a consumer test when using system of shampoo, conditioner, serum, and spray; tested with GLP-1 users experiencing hair loss.