Redken Extreme Mask is a rinse-out treatment hair mask for dry, damaged hair. This deep conditioner for dry, damaged hair fortifies damaged hair to be 15xs stronger. The Extreme Mask is formulated with Redken's Strength Complex with Protein and Lactic Acid to help restore strength, balance pH levels, and add smoothness.Benefits:- Deeply nourishing hair treatment for damaged hair- Strengthens and fortifies hair- Features Redken's Strength Complex After shampooing, apply to towel-dried hair. Leave on 3-5 minutes. Rinse thoroughly.