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.com/disclaimers
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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
- Protection
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- Fragrance
- Manageability
- Hair Feel
- Christy H.Verified BuyerReviewingHeatBounce conditioning heat protectant 4ozI recommend this productAge 35 - 44Hair Concern Chemical damage, Heat damage, Color-care, Dryness, Fragile/brittle hairHair Type Fine/ThinMy Results Visible Difference, Stronger Hair, Smoother Hair, Shinier Hair, Cleaner, fresher hairRated 5 out of 5 stars1 month agoGreat heat protectant
I use this now after every wash to protect before styling. Works wonders and I can tell it is protecting my hair because my hair strength is improving.
KK18Hair1 month agoThank you so much for this amazing review, Christy! We're absolutely thrilled to hear that you love the HeatBounce conditioning heat protectant and that you're using it after every wash! It's wonderful that you can feel it protecting your hair and that your hair strength is actually improving - that's exactly what we love to hear about our heat protection! We're so excited that you're experiencing such fantastic results and thanks for your incredible 5-star review! 💛
- Deyanirys S.Verified BuyerReviewingHeatBounce conditioning heat protectant 4ozI recommend this productAge 45 - 54Hair Concern Fragile/brittle hair, Color-care, Heat damageHair Type Fine/Thin, Grey HairMy Results Stronger Hair, Less Breakage, Shinier Hair, Smoother Hair, Less FrizzRated 5 out of 5 stars2 months agoA miracle
Best product there is to dry your hair. Either by blow drying or curling iron. Simply the best.
KK18Hair2 months agoThank you so much for this incredible review, Deyanirys! 💛 We're absolutely thrilled to hear that you think the HeatBounce conditioning heat protectant is a miracle - that's such an amazing compliment! It's wonderful that it's working so beautifully for you whether you're blow drying or using a curling iron, and we love that you consider it simply the best! We're so excited that you're loving the product and thanks for your fantastic 5-star review!
- Theresa H.Verified BuyerReviewingHeatBounce conditioning heat protectant 4ozI recommend this productAge 55 - 64Hair Concern Chemical damage, Heat damage, Color-care, Frizz, DrynessHair Type Fine/Thin, Thick/Coarse, Straight/Wavy, Grey HairMy Results Less Frizz, Bouncy Hair, Visible Difference, Stronger Hair, Soft Touchable HairRated 5 out of 5 stars2 months agoLOVE HEATBOUNCE !!
I absolutely LOVE this product and use it everyday! A little goes a long way. It's a great way to refresh hair between shampoos. Prefer using HeatBounce over using the K18.. Compliments K18 Dry Shampoo
KK18Hair2 months agoThank you so much for your incredible review, Theresa! 💛 We're absolutely thrilled to hear that you LOVE HeatBounce and use it every day! It's amazing that you've discovered how a little goes a long way - that's one of the things that makes this product so special. We love that you're using it to refresh your hair between shampoos and that it's become your go-to over other products! It's also fantastic to hear how perfectly it compliments the K18 Dry Shampoo - what a dream team! ✨ Thanks for your wonderful 5-star review! 🙌
- Jane G.Verified BuyerReviewingHeatBounce conditioning heat protectant 4ozI recommend this productAge 45 - 54Hair Concern Split-Ends, DrynessHair Type Fine/ThinMy Results Visible Difference, Smoother Hair, Shinier HairRated 5 out of 5 stars3 months agoHeatBounce conditioning heat protectant
Leaves my hair shiney , healthy and super straight with using the flat iron. Love this product!
KK18Hair3 months agoThank you so much for your fantastic review, Jane! 💖 We're absolutely thrilled to hear that HeatBounce is giving you such amazing results - shiny, healthy, and super straight hair sounds perfect! It's wonderful to know our conditioning heat protectant is delivering exactly what you're looking for with your flat iron routine. Your 5-star review means the world to us!
- Jessica M.Verified BuyerReviewingHeatBounce conditioning heat protectant 4ozI recommend this productAge 35 - 44Hair Concern Chemical damage, Heat damage, Color-care, Fragile/brittle hair, Split-EndsHair Type Fine/ThinMy Results Less Frizz, Less Breakage, Stronger Hair, Defined Curl/Wave Pattern, Soft Touchable HairRated 5 out of 5 stars3 months agoThat smell!!
Wow this stuff smells soooooookoo good wow!!!
KK18Hair3 months agoThank you so much for this amazing review, Jessica! We're absolutely thrilled to hear that you love the scent of our HeatBounce conditioning heat protectant! Your excitement about the fragrance truly makes our day and means the world to us - we're so grateful to have you as part of our K18 community! 💛