About this item The ULTRAfiller+ Thickening Spray not only thickens fine, thin hair but also provides heat protection and promotes stronger hair with less breakage. Spray has a lightweight, flexible feel and instantly creates the look and feel of thicker, fuller, and stronger hair in just one use. Formulated to thicken hair overall by 200% when using ULTRAfiller+ Shampoo, Conditioner & Spray (vs. a basic shampoo). Infused with biotin, known to provide hair with strength, and hyaluronic acid, known to hydrate hair. Safe for color-treated hair. Vegan-friendly formula with no ingredients of animal origin and no animal testing, cruelty-free, and free of silicone and SLS/SLES sulfates.