SMOOTHING SERUM 5.0OZ. Benefits: Helps lock out heat damage up to 455F with Natural Mushroom Complex.. Creates long lasting styles that help resist effects of humidity without the use of silicone.. Adds a balanced hydration shield with a straightening blend of Lactic, Glycolic, and Hyaluronic Acid.. Helps protect against breakage from heat damage while speeding up styling time.. Great for humidity control and anti-frizz smoothness while adding shine.. Formulated Without: Silicone. Phthalates. Parabens. SLS & SLES Surfactants. DEA. Research Results: Heat Protection Up to 455F. Sleek Effect Lasts through 3 washes*. 82% Reduction of Frizz after 2 flat iron passes. 5X Faster Straightening*. *vs Untreated hair.