What it is: An intensely repairing serum that works at the molecular level to repair broken bonds, reversing hair fiber damage.What it does: This serum improves strength and elasticity in even the most damaged hair, forming a cuticle protection film to defend against thermal damage while also reducing breakage and delivering smoothness, shine, softness and manageability. It's also fortified with a cocktail of vitamins, amino acids and peptides that protect against free-radicals, pollution and UV damage. The weightless formula leaves hair silky-soft with a brilliant, frizz-free shine. How to use: Work a small amount from midshaft to ends, using downward strokes. It can be applied to damp or dry hair. Do not rinse. 3.3 oz. Paraben-free; phthalate-free; paraffin-free; petrolatum-free; mineral oil-free. Made in Spain