TRESemmé Keratin Smooth Heat Protect Spray is a lightweight styling spray designed to protect hair from the damaging effects of heat while controlling frizz and maintaining a smooth, polished finish. The formula contains Hydrolyzed Keratin, which conditions the hair and supports smoother, stronger-feeling strands, while Glycerin and Propylene Glycol contribute moisture to reduce dryness associated with frequent heat styling. Amodimethicone and other conditioning silicones coat the hair surface to improve smoothness, reduce friction and enhance shine, while Cetrimonium Chloride provides additional conditioning and manageability. The formula also contains Potassium Dimethicone PEG-7 Panthenyl Phosphate, a conditioning ingredient related to panthenol that supports softness and hair care during styling. Designed for use before blow-drying, straightening or curling, the spray creates a protective layer between the hair and styling heat while keeping strands soft and manageable. It also delivers up to 72 hours of frizz control, making it suitable for unruly or frizz-prone hair that is regularly exposed to heated styling tools.