A pre-shampoo treatment that seals the cuticle and balances hair's pH to protect color from wash-related fading. Fadeblock* keeps hair color protected, helps to lock color and keeps your color vibrant and fresh for 10-12 washes. It also shields against hard water, saltwater and chlorine. Contains UV filters. Free from sulfates, parabens, phthalates, mineral oil, sodium chloride, petrolatum, and artificial colors. *When used with the Vault shampoo, conditioner and leave-in conditioner.