Smoothing hair care with guar gum and ISO's patented ISOamine that gives you a straight, sleek surface. Isoamine and Guar Gum smoothe, calm and transform coarse, frizzy and curly hair. Guar gum conditions, smoothes and controls frizz, while ISO's exclusive ISOamine gently softens hair bonds, making combing a cinch and straightening a long-lasting reality. Also formulated with ISO's Tri-Active Technology, vitamins A and E attach to damaged sites to create incredible shine from within. Soy and wheat proteins fill damaged areas to strengthen the internal structure of the hair and the cuticle layer for smoother, shinier hair without coating it. ISO's formulas are self-adjusting, hydrating hair with the ideal moisture balance.