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HeatBounce 1.6 oz
HeatBounce 1.6 oz
HeatBounce 1.6 oz
Before and after comparison of a woman's hair with K18 HeatBounce product.
Promotional graphic for HeatBounce heat protectants with a scientific diagram of hair follicle and text about heat protection.
HeatBounce 1.6 oz
K18 heat protectant and conditioning spray with a hand holding the bottle against a pink background
K18 Heatbounce Heat protectant with ressilicore heat-shielding technology on a pink background
HeatBounce 1.6 oz
Woman with styled hair holding a bottle of K-8 hair product, with text about heat protection and breakage reduction.
Person with long hair using a pink comb against a pink background with text about hair care.
Four women using a hair styling tool with text indicating different styles you can do with heatbounce.
Three women with styled hair against a colorful background with text about hair care.
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4.8
Rated 4.8 out of 5 stars
456 Reviews

mini HeatBounce conditioning heat protectant

Take the future of heat protection to go
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Description

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*.

*k18hairpro.com/disclaimers

  • Apply throughout sectioned hair, brushing through to help with even distribution. Less is more. Start small and build as needed. Hair should feel soft and tangle-free, but not coated.

  • Use on towel-dried hair before blow drying and on dry hair before hot tools

  • resilicore™ heat-shielding technology is inspired by proteins in nature 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 hair's inner cortex where heat damage can occur, forming a protective shield that fortifies from within.

  • Conditioning blend conditions, softens, and detangles even damaged hair

  • Created for all hair types + textures. Can be used on extensions.

Protects from heat up to 450°F

85% less breakage after blow drying⁷

Lightweight formula conditions, softens, and detangles even damaged hair


*Heat protection observed on hair in clinical testing after application of HeatBounce and use of 450℉ (232℃) flat iron on dry hair.


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.

³Results observed as a reduction in color change in scientific testing after application of HeatBounce on dry hair and use of 450℉ (232℃) flat iron.

⁴Results observed as a reduction in hair breakage in scientific testing after application of HeatBounce on dry hair and use of 450℉ (232℃) flat iron.

⁵Results observed as a reduction in hair breakage in scientific testing after application of HeatBounce on dry hair and use of 450℉ (232℃) flat iron.

⁶Results observed as an increase in protein stability in scientific testing after repeated exposure to UV and HeatBounce application.

⁷Reduction in hair breakage observed in clinical testing after application of high heat blow dry on wet hair.

Water (Aqua) (Eau), Cellulose Gum, Isopentyldiol, Propanediol , Cetearyl Alcohol, Isopropyl palmitate, Sodium Benzoate, C13-15 alkane, sh-Oligopeptide-78 s-Fruit Fly Oligopeptide-1, (sh-Oligopeptide-78 s-Fruit Fly Oligopeptide-1) Peptides, Laurdimonium Hydroxypropyl Hydrolyzed Barley Protein, Helianthus Annus (Sunflower) Seed Oil , Oryza Sativa (Rice) Bran Extract, Helianthus Annuus (Sunflower) Extract, Rosmarinus Officinalis (Rosemary) Leaf Extract, Tocopherol, Behentrimonium Chloride, Brassicatrimonium Chloride, Gluconolactone, Arginine, Coco-Glucoside, Lactic Acid, Cellulose, C12-20 Alkyl Glucoside, Citric acid , Potassium Sorbate, Benzyl Alcohol, Isopropyl Alcohol, C14-22 Alcohols, Fragrance (Parfum), Amyl Salicylate, Benzyl Salicylate, Citronellol, Citrus Aurantium Peel Oil, Dimethyl Phenethyl Acetate, Geraniol, Geranyl Acetate, Isoeugenyl Acetate, Limonene, Linalool, Linalyl Acetate, Pinene, Tetramethyl Acetyloctahydronaphthalenes, Vanillin.

Description

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*.

*k18hairpro.com/disclaimers

have questions?
get started here
Apply HeatBounce every time you apply heat, including if you switch between blow drying to hot tools.
HeatBounce is powered by 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.
Apply HeatBounce every time you apply heat, including if you switch between blow drying to hot tools.
First apply the PRO mist, wait 4 minutes, then shampoo and skip conditioner. Apply the PRO mask, and wait 4 minutes. This is when you apply HeatBounce and AstroLift™ before blowdrying or airdrying. If using hot tools, apply HeatBounce again. Finish with K18 oil and use AirWash™ to extend the look out of the salon, and recommend clients to use it between washes.
No. HeatBounce features a new K18 innovation—resilicore™ heat-shielding technology. This innovation is inspired by resilin—a natural protein known for its ability to withstand extreme temperatures and store energy. resilicore™ penetrates deep into hair’s cortex, forming a protective shield that fortifies the hair from within.
 the future of heat protection
0
less breakage after blow drying*
0
degree heat protection from cuticle to cortex*
Powered by resilicore™

Inspired by proteins in nature that can withstand extreme temperatures.

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heat protect + condition in one step
how to use HeatBounce
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.before hot tools.
learn more on our blog

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.

What Hot Tools Are Really Doing to Your Hair

 If your routine involves heat—this one's for you.
feel what's possible with K18
See how K18 unlocks our community's expression
4.8
Rated 4.8 out of 5 stars
Based on 456 reviews
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456 reviews
  • Cecilia D.
    Verified Buyer
    Reviewing
    HeatBounce conditioning heat protectant 4oz
    I recommend this product
    Age 55 - 64
    Hair Concern Heat damage, Dryness, Extending time between washes, Split-Ends, Color-care
    Hair Type Medium Density, Grey Hair
    My Results Stronger Hair, Less Breakage, Visible Difference, Smoother Hair, Cleaner, fresher hair
    Rated 5 out of 5 stars
    1 month ago
    Love HeatBounce

    I tried multiple heat proctectants and Heat Bounce by far is the best product out there! My daughter was at my house for Thanksgiving and tried it and put it on her Christmas wish list. The smell is really good too and my hair is so soft after using it!

    Was this helpful?
    K18Hair PRO
    1 month ago

    Thank you so much for your incredible review, Cecilia! We're absolutely thrilled to hear that HeatBounce has become your go-to heat protectant after trying so many others - there's no better compliment than knowing our formula is delivering that perfect protection while leaving your hair feeling so soft!

  • Angela A.
    Verified Buyer
    Reviewing
    HeatBounce conditioning heat protectant 4oz
    I recommend this product
    Age 45 - 54
    Hair Concern Chemical damage, Heat damage, Frizz, Dryness, Split-Ends
    Hair Type Fine/Thin, Straight/Wavy, Grey Hair
    My Results Less Frizz, Bouncy Hair, Visible Difference, Stronger Hair, Less Breakage
    Rated 5 out of 5 stars
    1 month ago
    Damage prevention

    This product will do wonders for your hair if you heat style your hair. It also doubles as a wonderful bouncy conditioner

    Was this helpful?
    K18Hair PRO
    1 month ago

    Thank you so much for your incredible review, Angela! We're absolutely thrilled to hear that the HeatBounce conditioning heat protectant is working wonders for your heat-styled hair and that you're loving how it doubles as a bouncy conditioner - there's nothing better than knowing this dual-action formula is providing both the protection and conditioning your hair needs! ❤️

  • Kim S.
    Verified Buyer
    Reviewing
    HeatBounce conditioning heat protectant 4oz
    I recommend this product
    Age 35 - 44
    Hair Concern Heat damage, Fragile/brittle hair, Dryness
    Hair Type Fine/Thin
    My Results Smoother Hair, Shinier Hair, Soft Touchable Hair
    Rated 5 out of 5 stars
    1 month ago
    Amazing

    I love how this smells and there is no weird residue. My hair feels super soft.

    Was this helpful?
    K18Hair PRO
    1 month ago

    Thank you so much for your amazing review, Kim! We're absolutely thrilled to hear that you love the HeatBounce conditioning heat protectant - it's wonderful that you're experiencing that incredible softness while enjoying the beautiful scent, and we're so glad there's no weird residue left behind, just perfectly protected and conditioned hair!

  • Maria G.
    Verified Buyer
    Reviewing
    HeatBounce conditioning heat protectant 4oz
    I recommend this product
    Age 55 - 64
    Hair Concern Chemical damage, Heat damage, Color-care, Frizz, Fragile/brittle hair
    Hair Type Medium Density, Grey Hair
    My Results Less Frizz, Bouncy Hair, Visible Difference, Stronger Hair, Shinier Hair
    Rated 5 out of 5 stars
    2 months ago
    A must have.

    My daughter uses this product and her hair is lovely. I decided to give it a try. It's amazing. My hair looks healthier and no freeze.

    Was this helpful?
    K18Hair PRO
    1 month ago

    Thank you so much for your wonderful review, Maria! We're thrilled to hear that both you and your daughter are loving the HeatBounce conditioning heat protectant and that it's making your hair look so much healthier with no frizz - it's amazing how this heat protectant formula can give you that smooth, protected look while keeping your hair nourished!

  • Diana M.
    Verified Buyer
    Reviewing
    HeatBounce conditioning heat protectant 4oz
    I recommend this product
    Age 25 - 34
    Client Hair Concerns Heat Damage, Color Care, Chemical Damage, Split Ends, Dryness
    Client Hair Types Fine/Thin
    Client Results Stronger hair, Visible Difference, Less Breakage, Soft Touchable Hair, Smoother Hair
    Rated 5 out of 5 stars
    2 months ago
    El mejor protector de calor

    El mejor protector de calor que he probado, me gusta mucho que ayuda a desenredar el cabello y tiene un aroma muy agradable. Soy estilista profesional de bellami y lo recomiendo a todas mis clientas, es excelente para usar en extensiones.

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    K18Hair PRO
    2 months ago

    ¡Muchísimas gracias por tu increíble reseña, Diana! Nos emociona saber que el HeatBounce es el mejor protector de calor que has probado y que te encanta cómo ayuda a desenredar el cabello con ese aroma tan agradable.

*Disclaimers