Seal the deal with step three - SILKY:SMOOTH Heat Activator. This leave-in spray works to deliver a powerful heat-activated polymer that provides an invisible barrier around the cuticle to seal in moisture and nutrients while locking out frizz caused by humidity. Infused with rich ingredients like Macadamia nuts, vegetable fats and oil, this formula detangles and softens hair while providing UV protection. How To Use: After Step 1 and 2, spray Step 3: SILKY:SMOOTH Heat Activator generously on damp, towel-dried hair, making sure to distribute the activator throughout the hair evenly. Using a hairdryer, rough dry to remove excess moisture, then comb and divide hair into sections. Using a styling iron, or hairdryer with a round or flat brush, smooth out each section from root to end until dry. Must use heat to activate and reactivate between washes.