Natural Amino Acids strengthen damaged, weak hair and treat dry, brittle hair by repairing and providing healthy moisture levels within the hair. Easily absorbed by the scalp, increases cell activity, improves blood flow, and prevents cellular aging. Reinforces and restores the natural hair fibers. Promotes shine, condition, and longevity-extends the effects of the in-salon treatment. Protects hair from damage caused by the environment and heat styling tools. Age-defying and anti-oxidant protect hair from damage caused by the environment and heat styling tools.