Best for: All hair types and textures that need heat protection, conditioning, detangling and protection against breakage caused by heat styling.

What is K18 HeatBounce Conditioning Heat Protectant?

K18 HeatBounce Conditioning Heat Protectant is a lightweight leave-in conditioning heat protectant designed to protect hair from heat up to 232°C while softening and detangling, even on damaged hair.

Powered by resilicore™ heat-shielding technology, the formula is designed to penetrate deeper than traditional heat protectants, reaching into the hair's inner cortex where heat damage can occur. There, it forms a protective shield that fortifies hair from within.

K18 states that HeatBounce provides 85% less breakage after blow drying and can be used on all hair types and textures, including extensions.

Who is it best for?

K18 HeatBounce Conditioning Heat Protectant may suit you if your hair:

• is regularly blow dried
• is styled using hot tools
• needs heat protection up to 232°C
• is prone to breakage from heat styling
• needs conditioning and softening
• becomes tangled and needs easier detangling
• is damaged and needs a lightweight conditioning heat protectant
• has extensions

K18 states that HeatBounce is created for all hair types and textures.

What problem does it solve?

Heat styling can cause damage within the hair, not just on its surface.

Traditional heat protectants work by coating the cuticle, but K18 HeatBounce uses resilicore™ heat-shielding technology designed to penetrate deeper into the hair's inner cortex, where heat damage can occur.

The technology forms a protective shield that fortifies hair from within, while a conditioning blend helps condition, soften and detangle even damaged hair.

K18 states that HeatBounce protects against heat up to 232°C and provides 85% less breakage after blow drying.

Key technology

resilicore™ heat-shielding technology: Inspired by proteins in nature that can withstand extreme temperatures. Its size and molecular makeup allow it to penetrate into the 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 while maintaining a lightweight feel.

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.

How to use K18 HeatBounce Conditioning Heat Protectant

Apply throughout sectioned hair and brush through to help distribute the product evenly.

Less is more. Start with a small amount 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 using hot tools.

There is no need to wait before heat styling. K18 states that HeatBounce does not need to be heat activated and you can blow dry or use hot tools immediately after application.

Why choose it?

Hair type: All hair types and textures
Primary concern: Heat protection
Best for: Blow drying + hot-tool styling
Key technology: resilicore™ heat-shielding technology
Benefits: Protects + conditions + softens + detangles
Heat protection: Up to 232°C
Breakage: 85% less breakage after blow drying
Formula: Lightweight leave-in conditioning heat protectant
Use on: Towel-dried or dry hair
Extensions: Suitable
Size: 118ml
Routine step: Protect + style
Brand: K18

Millies Expert Advice

Less is more with K18 HeatBounce Conditioning Heat Protectant. Apply it throughout sectioned hair and brush through for even distribution, starting with a small amount and building only as needed. Your hair should feel soft and tangle-free rather than coated. Use on towel-dried hair before blow drying or on dry hair before styling with hot tools.

Is K18 HeatBounce Conditioning Heat Protectant right for me?

Choose this if: you regularly blow dry or use hot tools and want a lightweight leave-in product that combines heat protection up to 232°C with conditioning, softening and detangling.

Consider another product if: heat styling isn't one of your primary concerns or you're specifically looking for K18's molecular damage repair treatment rather than a conditioning heat protectant.

Frequently asked questions

What does K18 HeatBounce Conditioning Heat Protectant do?

K18 HeatBounce protects hair from heat up to 232°C while conditioning, softening and detangling. K18 states that it provides 85% less breakage after blow drying.

Is K18 HeatBounce suitable for all hair types?

Yes. K18 states that HeatBounce was created for all hair types and textures.

Can I use K18 HeatBounce on hair extensions?

Yes. K18 states that HeatBounce can be used on extensions.

How much heat does K18 HeatBounce protect against?

K18 states that HeatBounce protects hair against heat up to 232°C.

Does K18 HeatBounce help protect against breakage?

Yes. K18 reports 85% less breakage after blow drying following application of HeatBounce.

How is K18 HeatBounce different from traditional heat protectants?

K18 states that traditional heat protectants coat the outside cuticle layer of the hair. HeatBounce's resilicore™ technology is designed to penetrate deeper into the hair's cortex, where heat damage can occur, forming a protective shield that fortifies from within.

Do I use K18 HeatBounce on wet or dry hair?

Both. Use HeatBounce on towel-dried hair before blow drying and on dry hair before using hot tools.

Do I have to wait before using heat after applying K18 HeatBounce?

No. K18 states that you can blow dry or use hot tools immediately after applying HeatBounce.

Does K18 HeatBounce need heat to activate?

No. K18 states that HeatBounce does not need to be activated by heat in order to provide heat protection.

Does K18 HeatBounce detangle hair?

Yes. Its lightweight conditioning formula is designed to condition, soften and detangle even damaged hair.

Can I use K18 HeatBounce before blow drying?

Yes. Apply HeatBounce to towel-dried hair before blow drying.

Can I use K18 HeatBounce before straighteners or other hot tools?

Yes. K18 recommends applying HeatBounce to dry hair before using hot tools.

What's the difference between K18 HeatBounce and K18 Molecular Repair Hair Oil?

Both provide heat protection benefits, but K18 states that HeatBounce defends against heat from the cuticle to the cortex, going as deep as heat damage goes. K18 Molecular Repair Hair Oil provides traditional heat protection on the outer layers of the hair alongside clinically proven damage repair.