- Deep Repair Hair Masque delivers deep conditioning, manageability and smoothness. It is a deep treatment that helps provide protection by strengthening the hair shaft against damage and in turn reduces breakage. Intense, lightweight conditioning agents target damaged, dry or color-treated hair, helping to provide protection by strengthening the hair shaft against damage, which reduces breakage. Use as needed. After shampooing, work evenly through hair. Leave on 3 – 5 minutes. Rinse well.