What It Is:Discover your hair's true strength thanks to our hair repair serum. An intensely repairing serum that works at the molecular level to repair broken bonds reversing hair fiber damage back to virgin hair. Formulated Without:Sulfates, Parabens, Mineral Oils, Phthalates, Paraffin or Petrolatum.Who It Is For:Anyone who needs an anti-aging hair treatment or has hair that is weak, thinning or brittle.What It Does: Improves strength and elasticity in even the most damaged hair, in fact, the greater the damage the more noticeable improvement. Forms a cuticle-protection film to defend against thermal damage while also reducing breakage and delivering smoothness, shine, softness and manageability to hair. Our hair repair serum is fortified with a cocktail of vitamins, amino acids and peptides that protect against free radicals, pollution and UV damage. This potent leave-in serum contains 66% of active ingredients yet the weightless formula leaves hair silky-soft with a brilliant, frizz-free shine.How to Use:Work a small amount of hair repair serum from mid-shaft to ends lock by lock using downward strokes. Can be applied to damp or dry hair. DO NOT RINSE. Brush and style as usual.3.4 oz./ 100 mL