




A conditioning heat protectant formula powered by resilicore™ heat shielding technology to help prevent heat damage up to 450°F from the inside out, condition and detangle hair, and defend against heat, mechanical, and UV environmental damage that can cause color fade, dryness, dullness, and breakage.
This leave-in conditioning heat protectant detangles, softens, and delivers deeper heat protection than ever before*—for 85% less breakage after blow drying.
resilicore™ heat-shielding technology is a breakthrough innovation inspired by resilin—a natural protein that can withstand extreme temperatures.
Unlike traditional heat protectants that only coat the cuticle, the size + molecular makeup of resilicore™ allows it to penetrate deeper than ever before*, into the cortex where heat damage can occur, forming a protective shield that fortifies from within.
How often can I reapply HeatBounce?
Apply HeatBounce every time you apply heat, including if you switch between blow drying to hot tools.
Results observed:
Clinically proven to help prevent breakage⁴
⁴Results observed as a reduction in hair breakage in scientific testing after application of K18 HeatBounce on dry hair and use of 450℉ (232℃) flat iron.
Protects against mechanical⁵ + environmental damage like UV⁶
⁵Results observed as a reduction in hair breakage in scientific testing after application of K18 HeatBounce on dry hair and use of 450℉ (232℃) flat iron.
⁶Results observed as increase in protein stability in scientific testing after repeated exposure to UV and HeatBounce application.
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