8,389 Reviews
HeatBounce conditioning heat protectant 4oz
Description
This leave-in conditioning heat protectant detangles, softens, and delivers deeper heat protection than ever before*—for 85% less breakage after blow drying⁷.
Repairs Damage Caused By
- Bleach + Color
- Heat
- Chemical Services
Leave-In Molecular Repair Hair Mask:In the shower:
-Shampoo, don‘t condition.
Out of the shower:
-Using a towel, gently dry hair until damp.
-Begin with 3 pumps of K18 mask.
-Only add more as needed, up to 9 pumps. Average use is 6 pumps (this is a highly concentrated formula, so you‘ll need much less than traditional masks.)
-Apply evenly from ends to roots.
-Let sit for four minutes.
-Don‘t rinse out.
-Style as usual after the four minutes is up (fine to add heat protectant or styling product now).
-Use for the first four to six washes, then swap to maintenance mode and use as needed.
AstroLift™ reparative volume spray:-Shake well.
-Hold bottle 4-6 inches from roots + hair.
-Spray generously throughout.
-Blow dry for added volume.
Can be applied to dry or clean, towel-dried hair, with or without heat styling. Buildable, lightweight spray can be used in between washes to amplify volume.
Bestselling leave-in molecular repair hair mask repairs damage from bleach + color, chemical services, and heat* in 4 minutes for strong, soft, smooth, bouncy hair.
AstroLift™ reparative volume spray reverses bounce-depleting damage for 2 days of touchable volume + bounce*. Lightweight, buildable formula weightlessly lifts all hair types—especially fine, fragile, aging, and breakage-prone hair—without a sticky, crunchy, or weighed-down feel.
One use of leave-in molecular repair hair mask delivers:
- Healthier hair in 4 minutes*
- Clinically proven damage repair from bleach* + color*, chemical services*, and heat*
One use the AstroLift™ reparative volume spray delivers:
- 2.5x more all-over volume*
- Touchable volume + bounce for up to 2 days*
- Buildable*, lightweight* volume
- Humidity-resistant* hold that won’t fall flat for up to 2 days*
leave-in molecular repair hair mask
Water (Aqua) (Eau), Alcohol Denat., Propylene Glycol, Cetearyl Alcohol, Dicaprylyl Ether, Cetyl Esters, Behentrimonium Chloride, Polysorbate 20, sh-Oligopeptide-78 (K18PEPTIDE™), Hydrolyzed Wheat Protein, Hydrolyzed Wheat Starch, Isopropyl Alcohol, Tocopherol, Phenoxyethanol, Potassium Sorbate, Citric Acid, Fragrance (Parfum), Geraniol, Linalool, Hexyl Cinnamal, Benzyl Alcohol.
AstroLift™ reparative volume spray
Water (Aqua) (Eau), Alcohol Denat., Maltodextrin/VP Copolymer, Propanediol, PVP, Polysorbate 20, Benzyl Alcohol, Ascorbic Acid, Tocopheryl Acetate, sh-Oligopeptide 78 (K18PEPTIDE™), Palmaria Palmata Extract, Arginine, Glycerin, Levulinic Acid, Hydroxyacetophenone, Glyceryl Caprylate, Polyquaternium - 10, Pentylene Glycol, Sodium Citrate, Tetrasodium Glutamate Diacetate, Phenoxyethanol, Ethylhexylglycerin, Potassium Sorbate, Citric Acid, Fragrance (Parfum)
how to use HeatBounce conditioning heat protectant
Blow dry, curl + straighten your hair—without damage.
Meet HeatBounce: Deeper Heat Protection Than Ever Before*
Powered by new patented heat-shielding tech.
-
Lucy S.Verified Buyer
2 days agoAbsolutely the BEST!This product is the best for dry course damage over processed hair. Put on towel, dried hair and blow dry and style as usual and your hair is more silky, smooth than ever imaginable!
KK18Hair2 days agoWe're so thrilled to hear this, Lucy! Thank you for sharing your experience with this incredible formula!
-
Melissa W.Verified Buyer
3 days agoScent mask
It’s not overpowering and fantastic change up from the original with all the great benefits of the mask!
KK18Hair2 days agoIt's wonderful to hear that the limited edition scent gives you that perfect balance - a fantastic change from the original without being overpowering, while still delivering all those amazing mask benefits! Thank you for sharing your experience with this special formula, Melissa!
-
Christine L.Verified Buyer
5 days agoThe Best for Damaged Hair
I tried this product many years ago and wasn’t really thrilled with it. However, my hairdresser continues to use many of their products and loves them. So I decided to give it another try and ordered it directly from the K-18 website. I’m not sure but I think the first time I tried it. I didn’t buy it directly from them and I think it may not have been authentic. Because this time when I tried it, it was excellent. First, I tried a small bottle and now I got a bigger bottle and I’m thinking I should’ve got the biggest bottle. Really helps with frizzy color damaged hair and split ends. I’m on my third or fourth wash and starting to notice a real difference in the texture of my hair. And it’s also. not getting tangled as much afterwards.
KK18Hair2 days agoWe love that you went from the small bottle to the bigger one - that's always a great sign! Thank you for sharing your experience and for trusting us with your hair care journey!
-
ANGIE P.Verified Buyer
1 week agoNonstop compliments
Used this mask before a girls night and everyone was asking what I was wearing. It's a mysterious, and expensive smell, like what you'd expect from a boutique hotel. It's not overly feminine, with its peppery notes to balance the floral. As a long time mask lover, I might need to go to Future Society to purchase a bottle!
KK18Hair1 week agoWe're so excited to hear about all the compliments you received, Angie! It sounds like the limited edition scent was the perfect choice for your girls night. Thank you for sharing your wonderful experience!
-
AndreaVerified Buyer
1 week agoLove the mask but hate the scent
Wow…. The scent is just bad. Really bad. Not feminine at all. Smells like peppery dirt. I was Looking forward to trying it with a floral woodsy scent but instead it just smells like peppery and dirt … for $75 😭
KK18Hair1 week agoThank you for sharing your honest feedback. We’re sorry to hear the scent didn’t meet your expectations. Fragrance preference is so individual, and we appreciate you giving the product a try. We went ahead and processed a refund for your order, you should receive an email confirmation shortly.
