Product Description The PROfiller+ Thickening Shampoo gives fine, flat hair an instant plumping boost for hair that looks and feels thicker, fuller, and stronger in just one use. This expertly formulated shampoo for thin, flat hair cleanses hair and thickens hair overall by 200%* while helping to reduce hair loss due to breakage. Featuring a blend of Biotin, known to provide hair with strength, and Hyaluronic Acid, known to hydrate hair. Silicone-free formula is also vegan friendly. *when using PROfiller+ Shampoo, Conditioner & Spray vs.