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
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
- Protection
- Texture
- Fragrance
- Manageability
- Hair Feel
- Shirley Y.Verified BuyerReviewingHeatBounce conditioning heat protectant 4ozI recommend this productAge 55 - 64Hair Concern Fragile/brittle hair, Split-Ends, Chemical damage, Color-care, DrynessHair Type Fine/Thin, Straight/Wavy, Grey HairMy Results Less Frizz, Visible Difference, Smoother Hair, Less Breakage, Soft Touchable HairRated 5 out of 5 stars1 hour agoHeatbounce
Totally love this conditioning heat protection! Makes my hair soft & less damaged from hair dryer & straightener. I use it every day.
KK18Hair27 minutes agoThank you so much for your amazing review! 💜 We're thrilled you're loving HeatBounce and that it's keeping your hair soft and protected from daily heat styling. We appreciate your support! ✨
- Alicia F.Verified BuyerReviewingHeatBounce conditioning heat protectant 4ozI recommend this productAge 45 - 54Hair Concern Color-care, Heat damage, Extending time between washesHair Type Medium DensityMy Results Bouncy Hair, Visible Difference, Smoother Hair, Soft Touchable Hair, Cleaner, fresher hairRated 5 out of 5 stars7 hours agoHeat bounce
This product is worth every penny. It leaves my hair looking fresh and enhances my style . Will by again.
KK18Hair5 hours agoThank you so much for your amazing 5-star review, Alicia! 💜 We're thrilled that HeatBounce is leaving your hair looking fresh and enhancing your style. We appreciate your support! ✨
- judith P.Verified BuyerReviewingHeatBounce conditioning heat protectant 4ozI recommend this productAge 65+Hair Concern Frizz, Dryness, Split-Ends, Fragile/brittle hair, Heat damageHair Type Fine/ThinMy Results Less Frizz, Bouncy Hair, Visible Difference, Stronger Hair, Less BreakageRated 5 out of 5 starsYesterdayThis is wonderful ❤️
Heatbounce is absolutely wonderful in every way from the smell to the protection
I love ALL the K-18 products and the customer service 😍
KK18HairYesterdayThank you so much for your amazing review! 💙 We're thrilled you're loving HeatBounce and all of our K18 products. We appreciate your support! ✨
- April A.Verified BuyerReviewingHeatBounce conditioning heat protectant 4ozI recommend this productAge 35 - 44Hair Concern Chemical damage, Heat damage, Fragile/brittle hair, Split-EndsHair Type Fine/Thin, Straight/WavyMy Results Visible Difference, Smoother Hair, Soft Touchable HairRated 4 out of 5 stars4 days agoPretty good
It seems to work but can be a little heavy if I use just a little too much. It could use a different type of spray mechanism for better, more even distribution.
KK18Hair4 days agoHi April,
Thank you so much for taking the time to share your feedback on HeatBounce conditioning heat protectant! We really appreciate your honest thoughts on the spray mechanism and application. Your feedback is valuable to us.
- Marnie L. B.Verified BuyerReviewingHeatBounce conditioning heat protectant 4ozI recommend this productAge 55 - 64Hair Concern Heat damage, Color-care, Frizz, Dryness, Split-EndsHair Type Fine/ThinMy Results Less Frizz, Bouncy Hair, Visible Difference, Less Breakage, Soft Touchable HairRated 5 out of 5 stars4 days agoLove it!
Best detagler I've ever used. Make your hair super soft and the comb or brush can easy go through.
KK18Hair4 days agoThank you so much for your amazing review! 💙 We're thrilled to hear that HeatBounce is working so well as a detangler and leaving your hair feeling super soft. We appreciate your support!