What it is: A leave-in treatment mask for all hair types that clinically reverses damage in four minutes. The patented peptide technology works to repair damage from bleach, color, chemical services, and heat, restoring strength, softness, smoothness, and bounce to hair. Hair Type: Fine, Medium, and Thick Hair Texture: Straight, Wavy, Curly, and Coily Hair Concerns: - Damage/Split Ends/Breakage- Color Safe- Straightening/Smoothing Key Benefits:  - Restores strength, softness, smoothness, and bounce- Repairs damaged hair- Easy leave-in formula delivers lasting results Highlighted Ingredients: - K18Peptide™: Repairs damage from bleach, color, chemical services, and heat. Ingredient Callouts: This product is vegan, cruelty-free, and comes in recyclable packaging. What Else You Need to Know: This mask is powered by the patented K18Peptide, which is just the right size and molecular structure to reach the innermost layers of hair and re-connect broken keratin chains responsible for hair's strength and elasticity. Fragrance Description: K18's Signature Scent: The light floral scent features notes of jasmine and peony.

K18 x Future Society Scent: Floating Forest fragrance has cool, aquatic, floral notes—rooted in an extinct rainforest tree once found only in Borneo. Top notes: Cooling Bergamot + Black PepperMid notes: Dewy Freesia, Water Lily + Rose AbsoluteBase notes: Salted Musk, Wet Stones + Papyrus Clinical Results: In a clinical study on hair that was bleached 8 times, after 2 uses:- Biotech-powered K18Peptide restored damaged hair by up to 82% This product is an Allure Best of Beauty award winner. Clean at Sephora is our commitment to offering effective products without certain ingredients, such as parabens, sulfates, phthalates, and mineral oils. Learn more here.