K18 HeatBounce™ is a breakthrough heat protectant powered by biomimetic peptide technology to strengthen hair from the inside out while shielding it from heat damage up to 450°F (232°C). Lightweight and non-greasy, this professional-grade formula smooths frizz, locks in moisture, and enhances style longevity without buildup or residue. Ideal for blowouts, straightening, or curling, it supports healthier styling and preserves color vibrancy. The 118 ml retail size is perfect for at-home maintenance between salon visits and consistent protection during your heat styling routine