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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.
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.
4.8
Rated 4.8 out of 5 stars
535 Reviews
tsa-approved

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

    • More to know
      • 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.
    • Key benefits

      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.

    • How to use
      • 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
    • Ingredients

      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.

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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.
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.
have questions?

still have questions? visit our help center

How does HeatBounce work?

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.

How often can I reapply HeatBounce?

Apply HeatBounce every time you apply heat, including if you switch between blow drying to hot tools.

When do I use it in my routine?

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.

Is the K18PEPTIDE™ in HeatBounce?

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
85%
less breakage after blow drying⁷
450
degree heat protection from cuticle¹ to cortex²
Powered by resilicore™

Inspired by proteins in nature that can withstand extreme temperatures.

Explore the Science Explore the Science

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.

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4.8
Rated 4.8 out of 5 stars
Based on 535 reviews
98%would recommend these products
Customers Talked About
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535 reviews
  • Mary J.
    Verified Buyer
    Reviewing
    HeatBounce conditioning heat protectant 4oz
    I recommend this product
    Age 55 - 64
    Hair Concern Chemical damage, Frizz, Fragile/brittle hair
    Hair Type Straight/Wavy, Grey Hair, Medium Density
    My Results Less Frizz, Visible Difference, Stronger Hair, Soft Touchable Hair, Shinier Hair
    Rated 5 out of 5 stars
    4 days ago
    Great protectant!

    A little goes a long way with this protectant. My hair is noticeably soft and easy to manage. I am 62 swim everyday and live in florida.

    Was this helpful?
    K18Hair PRO
    4 days ago

    We love hearing this! 💗 We're so glad HeatBounce is keeping your hair soft and manageable, especially with your active lifestyle. Thank you for making K18 part of your routine! ✨

  • Julie o.
    Verified Buyer
    Reviewing
    HeatBounce conditioning heat protectant 4oz
    I recommend this product
    Age 25 - 34
    Hair Concern Color-care, Heat damage, Chemical damage
    Hair Type Thick/Coarse
    My Results Less Breakage, Shinier Hair, Soft Touchable Hair, Cleaner, fresher hair, Stronger Hair
    Rated 5 out of 5 stars
    1 week ago
    Great heat protection!

    Love this heat protectant! It leaves my hair soft, smooth, and protected without weighing it down. Perfect for my color-treated hair! ❤️

    Was this helpful?
    K18Hair PRO
    1 week ago

    Thank you so much for the love! 💙 We're thrilled to hear you're loving HeatBounce and that it's delivering the soft, smooth protection your color-treated hair deserves! ✨

  • Hailey S.
    Verified Buyer
    Reviewing
    HeatBounce 1.6 oz
    I recommend this product
    Age 25 - 34
    Hair Concern Heat damage, Chemical damage, Fragile/brittle hair
    Hair Type Thick/Coarse
    My Results Less Breakage, Shinier Hair, Smoother Hair
    Rated 4 out of 5 stars
    1 week ago
    Heat bounce

    My hair is forever thankful I have found this heat protectant!

    Was this helpful?
    K18Hair PRO
    1 week ago

    Thank you so much for the love! 💙 We're thrilled to hear your hair is loving HeatBounce! ✨

  • Allison D.
    Verified Buyer
    Reviewing
    HeatBounce conditioning heat protectant 4oz
    I recommend this product
    Age 45 - 54
    Hair Concern Heat damage, Color-care, Dryness, Fragile/brittle hair, Frizz
    Hair Type Medium Density, Fine/Thin
    My Results Less Frizz, Bouncy Hair, Visible Difference, Less Breakage, Stronger Hair
    Rated 5 out of 5 stars
    1 week ago
    Possibly my favorite product!!

    I use this on wet hair and before curling my hair. My curls stay all day and feels soft. I can’t live without this product!!

    Was this helpful?
    K18Hair PRO
    1 week ago

    Thank you so much for the love! 💙 We're thrilled to hear HeatBounce is your favorite and keeping your curls looking amazing all day long! ✨

  • Jennifer B.
    Verified Buyer
    Reviewing
    HeatBounce 1.6 oz
    I recommend this product
    Age 45 - 54
    Hair Concern Chemical damage, Heat damage, Frizz, Fragile/brittle hair, Dryness
    Hair Type Fine/Thin, Grey Hair
    My Results Less Frizz, Visible Difference, Smoother Hair
    Rated 5 out of 5 stars
    3 weeks ago
    The best heat protectant on the market.

    This is some magic stuff. I’m a FitPro & this product holds my hair in place through multiple workouts & touch ups.

    Before & after photos.

    Was this helpful?
    K18Hair PRO
    3 weeks ago

    Thank you so much for the love! 💙 We're thrilled to hear HeatBounce is delivering the hold you need through your workouts! ✨

*Disclaimers