Transforms hair strands to appear thicker and fuller. Delivers all-day, all-over volume that lasts. Actively repairs strands for healthier hair. Leaves hair soft to the touch with no sticky residue. Versatile for use as an all-dry styler or with heat for extended thickness. Delivers 450°F/232°C heat protection. COMPOSITION: Amaranth Peptide helps increase the diameter of the hair, helping the hair look fuller. Amino acid, found in Amaranth Peptide, help to nourish and repair the hair cuticle. Volume Polymers help provide long-lasting volume. Achieve fuller-looking hair in just a spray with the OUAI Thickening Spray. The lightweight formula delivers a lifted illusion at the roots to enhance your voluminous blow dry. Formulated to thicken the appearance of hair, the spray plumps the hair fibres with moisture for visibly increased volume and density. Limp, weakened hair strands are left looking stronger and lifted without a weighted feeling.