The K18 Prep + Repair At-Home Duo brings a pro-inspired two-step routine into your bathroom: first you detox, then you repair. The detox shampoo deeply cleanses to remove buildup and impurities, while the leave-in molecular repair mask helps support the inner hair structure, smooth the cuticle and reduce breakage. At-home detox + repair discovery routine Helps remove buildup that weighs hair down Supports molecular-level repair and helps reduce breakage Smooths and softens for healthier-looking shine Great for color-treated, lightened or sensitized hair THIS DUO INCLUDES: Peptide Prep | Detox Shampoo — 53 ml / 1.8 fl. oz. Leave-in Molecular Repair Hair Mask — 50 ml / 1.7 fl. oz. HOW TO USE Start with the Detox Shampoo on wet hair: massage into scalp and lengths, then rinse thoroughly. Towel-dry hair. Without applying conditioner, work a small amount of K18 molecular repair mask through mid-lengths and ends and let it sit for the recommended K18 processing time. Do not rinse. Style as usual. Use 1–2 times per week or as a targeted repair routine depending on hair condition.