With its moisture-enhanced formula, TRESemmé 7 Day Keratin Smooth Conditioner gently conditions women's hair to help create smooth, frizz-resistant styles that last for up to 7 days* when used with TRESemmé 7 Day Keratin Smooth Shampoo and TRESemmé 7 Day Keratin Smooth Heat Activated Treatment. The conditioner features ThermaFlex Technology which combines unique conditioning and strengthening polymers to create a smooth, more manageable hairstyle that resists humidity while remaining soft and manageable between washes. This non-damaging hair care system is also infused with Keratin. Enjoy post-wash durability, smoothness, and convenient re-styling.