The K18 Biomimetic Hairscience PEPTIDE PREP Sephora Set is an exclusive, travel-sized hair repair kit originally distributed as a Sephora Beauty Insider VIB and Rouge milestone gift. Designed for all hair types, this dual-action treatment system focuses on deeply clarifying the scalp and rebuilding broken hair bonds at a molecular level. ✓PEPTIDE PREP Clarifying Detox Shampoo (1.8 oz / 53 mL): Uses activated charcoal and salicylic acid to remove 99% of product buildup, 95% of sebum, and 76% of copper minerals from hard water without stripping color. This creates a clean canvas so the follow-up treatment can fully penetrate. ✓Leave-In Molecular Repair Hair Mask (0.17 oz / 5 mL): A highly concentrated, patented peptide treatment that reverses damage from bleach, color, chemical services, and heat styling in just 4 minutes.