mini HeatBounce conditioning heat protectant
Take the future of heat protection to go
A discovery-sized version of our leave-in conditioning heat protectant detangles, softens, and delivers deeper heat protection than ever before*—for 85% less breakage after blow drying*.
*k18hair.co.uk/disclaimers
still have questions? visit our help center
Is HeatBounce activated by heat?
No, HeatBounce does not need to be activated to protect from heat.
Do I have to wait to use heat after applying HeatBounce?
No, you can blow dry or use hot tools immediately after applying HeatBounce.
How is HeatBounce different from traditional heat protectants?
HeatBounce is powered by resilicore™ heat-shielding technology, an innovation inspired by resilin—a natural protein that can withstand extreme temperatures. Unlike traditional heat protectants that only coat the outside cuticle layer of hair, 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.
*Heat protection observed on hair in clinical testing after application of HeatBounce and use of 450℉ (232℃) flat iron on dry hair
What’s the difference between molecular repair hair oil and HeatBounce?
While the molecular repair hair oil and HeatBounce have heat protection benefits, HeatBounce defends against heat from the cuticle¹ to the cortex², going as deep as heat damage goes to help protect against color fade, dry feeling, dullness, and breakage. The oil delivers traditional heat protection on the outer layers of hair and clinically proven damage repair.
¹Results observed as a reduction in hair breakage in scientific testing after application of HeatBounce and use of 450℉ (232℃) flat iron on dry hair
²Results observed as an increase in protein stability in scientific testing after application of HeatBounce on damp hair and exposure to 450℉ (232℃) flat iron on dry hair.
When do I use HeatBounce in my routine?
After shampooing, apply the K18 mask (wait 4 minutes) or DAMAGE SHIELD conditioner. Then, apply HeatBounce and AstroLift™ before blow drying or air drying. Use HeatBounce again before any hot tools. Finish with K18 oil and use AirWash™ to refresh hair between washes.
How often can I reapply HeatBounce?
Apply HeatBounce every time before you apply heat, including if you switch between blow drying to hot tools.
heat protect + condition in one step
1. Apply throughout sectioned hair, brushing through to help with even distribution.
2. Less is more. Start small and build as needed. Hair should feel soft and tangle-free, but not coated.
3. Use on towel-dried hair before blow drying and on dry hair before hot tools.
See how K18 unlocks our community's expression
- Heat Protection
- Hair Texture
- Frizz Control
- Detangling
- Shine
- Vanessa C.Verified BuyerReviewingHeatBounce 47 mLI recommend this productAge 35 - 44Hair Concern Chemical damage, Heat damage, Frizz, Fragile/brittle hair, Oily hair/scalpHair Type Fine/Thin, Straight/WavyMy Results Less Frizz, Visible Difference, Soft Touchable Hair, Shinier Hair, Smoother HairRated 5 out of 5 stars1 hour agoGreat 🩷💜🩵
I love the way this product makes my hair feel!!
It protects my hair from heat and styling and doesn’t make it look greasy like a lot of other brands and high dollar products.
KUK18Hair UK37 minutes agoThank you so much for the awesome review! 🔥💕 We're thrilled to hear you're loving how HeatBounce protects your hair without the greasy feel! ✨
- Jule C.Verified BuyerReviewingHeatBounce conditioning heat protectant 118 mLI recommend this productAge 45 - 54Hair Concern Chemical damage, Frizz, Fragile/brittle hairHair Type Medium Density, Fine/ThinMy Results Less Frizz, Bouncy Hair, Visible DifferenceRated 5 out of 5 starsYesterdayLove my Heatbounce
Love the added conditioning I get from heat bounce. Great product!
KUK18Hair UKYesterdayThank you so much for the 5-star love! 💕 We're thrilled you're loving the conditioning benefits of HeatBounce! ✨
- Angel R. J.Verified BuyerReviewingHeatBounce conditioning heat protectant 118 mLI recommend this productAge 55 - 64Hair Concern Fragile/brittle hair, Split-EndsHair Type Medium DensityMy Results Soft Touchable Hair, Visible Difference, Stronger Hair, Less Breakage, Smoother HairRated 5 out of 5 starsYesterdayBest heat protection
I love this stuff. It truly protects my hair from heat and UV plus conditions at the same time. Perfection. Can’t live without this!
KUK18Hair UKYesterdayThank you so much for the 5-star love! 💕 We're thrilled you're obsessed with HeatBounce! Here's to protected, conditioned, gorgeous hair! ✨
- Michelle M.Verified BuyerReviewingHeatBounce Deluxe sampleI recommend this productRated 5 out of 5 stars5 days agoBest Heat Protectant Ever!!
This is the best best heat protectant that I have ever used. Left my hair so soft & smooth & smells great too!
KUK18Hair UK5 days agoThank you so much for the amazing review! 💕 We're thrilled to hear you're loving HeatBounce Deluxe and that it's leaving your hair so soft and smooth! ✨
- Madison S.Verified BuyerReviewingHeatBounce conditioning heat protectant 118 mLI recommend this productAge 25 - 34Hair Concern Dryness, Frizz, Split-EndsHair Type Thick/Coarse, Straight/WavyMy Results Less Frizz, Visible Difference, Smoother Hair, Shinier Hair, Soft Touchable HairRated 5 out of 5 stars5 days agoMy new favorite
I have thick, wavy, frizzy hair. This is the first heat protectant that actually makes it shiny and soft. I use it on wet and dry hair. Love it.
KUK18Hair UK5 days agoThank you so much for the amazing review! 💕 We're thrilled to hear HeatBounce is your new favorite and making your thick, wavy hair shiny and soft! ✨