ISO Tamer Cleanse Liter Size/33 oz. This smoothing shampoo is formulated with guar gum and ISO's patented ISOamine to soften the hair's bonds for smoother combing, frizz control and long-lasting straightening. Designed for: Unruly, frizzy hair Natural or textured curly hair Benefits: Gently cleanses while moisturizing hair Controls frizz Smoothes hair to a sleek finish Use: Apply to wet hair, lather, massage and rinse. Follow with Tamer Condition. Ingredients: ISOamine and Guar Gum: ISO's signature ingredient ISOamine works with guar gum to gently soften internal bonds of hair for smoother combing and effective, long-lasting straightening. Mild Cleansers and Foam Boosters: Gently remove dirt and buildup in a dense, creamy lather. Low-Viscosity Silicone: Seals in moisture, softens hair and adds shine. Humectants: Balance moisture levels in the hair to keep it smooth and frizz-free. Safflower Seed Oil: A natural emollient and antioxidant that prevents moisture loss.