Joico | YouthLock | Shampoing au CollagèneJoico YouthLock Collagen Shampoo Revitalizing Collagen Shampoo Tired and Mature Hair A youthful boost for your hair Le YouthLock Shampoo Gently cleanses dry, brittle, or mature hair while restoring its natural shine. Its collagen enriched formula restores strength, body, and suppleness to hair weakened by time. The result: stronger, shinier, and more vibrant hair. Key Benefits Cleans gently without damaging the fiber Reduces the breakage and loss