The YouthLock Collagen Hair Mask by Joico, 150 ml, is an intensive treatment designed to regenerate and strengthen damaged hair. Enriched with collagen and nourishing ingredients, this mask repairs the struttura from within, improving elasticity and softness. Its innovative formula helps seal the cuticle, reducing breakage and providing natural shine. Ideal for those looking to combat signs of aging in hair, YouthLock offers protective action against external aggressors such as pollution and thermal styling. Easy to apply, it delivers visible results from the very first applications, making the hair more resilient, vibrant, and silky. An essential ally for healthy, youthful-looking hair.