Hair And Skin Kindness Made With Biotin, Collagen and Coffee Seed Oil. Adds Fullness and Strengthens. No Sulfates or Parabens. Cruelty Free. Hask Clean Beauty. No Silicones, Phthalates, Gluten, Drying Alcohol or Artificial Colors. Leaping Bunny Certified. Strict standards for us, only the best formulas for you. Tri Level Thickening Complex: Volumize, Strengthen, Fortify. Transform fine, flat strands into volumized, fuller hair with HASK Biotin Boost Thickening Shampoo. Infused with biotin, collagen and coffee to help promote stronger thicker looking hair. Go big or go home!