Removes build-up and improves hair's condition. Why Use ThermaSilk Daily Clarifying Shampoo? Removes build-up to reveal shiny, luxurious hair; Gentle enough to use everyday, even on color treated hair; Is Heat-Activated to improve the condition of your hair. What Does Heat-Activated Mean? The ThermaSilk revolutionary formula contains heat-activated moisturizers that lock in your hair's moisture that can be lost during heat styling - transforming a dull, lifeless texture into softer, silkier hair. Biodegradable formula.