What It Is
The future of heat protection. This leave-in conditioner and heat protectant in one works unlike anything else* so your hair retains health, color vibrancy, and shine through blow drying and hot tools. Prevents heat damage up to 450°F (232°C) from cuticle to cortex* while softening, smoothing, and detangling for less frizz and increased manageability for all hair types + textures.
*k18hairpro.com/disclaimers
What It Does
This conditioning heat protectant fortifies hair at the deepest level, preventing heat damage, dryness + breakage from blow drying and hot tools.
• Delivers heat protection at the core*, with patented resilicore™ heat-shielding technology to prevent heat damage up to 450°F (232°C)
• Protects against damage from heat, mechanical and environmental aggressors such as UV rays
• Lightweight moisture + hydration enhances smoothness and softness; hair feels and looks healthier without being weighed down
*k18hairpro.com/disclaimers
What Else You Need to Know
Heat protection from cuticle to the cortex*: resilicore™ heat-shielding technology is a breakthrough innovation inspired by resilin—a natural protein that can withstand extreme temperatures. Unlike traditional heat protectants that stop at hair's cuticle, resilicore™'s size + molecular makeup allows it to penetrate deep into the cortex, forming a protective shield that fortifies from within. This targeted protection delivers extended defense where hair needs it most.
Weightless conditioning: Lightweight cream transforms into a spray + binds to hair to help regulate lasting moisture balance, detangle, smooth for more manageable hair. pH-balanced formula minimizes cuticle swelling for less frizz, and more shine.
Created for all hair types + textures. Can be used on extensions.
*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.
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.
Purchases made in SalonCentric stores may be returned to any SalonCentric store. Purchases made through SalonCentric Customer Service, SalonCentric Business Partners, and SalonCentric.com orders Sold and Shipped by SalonCentric may be returned to a SalonCentric store; however, the return must not exceed $450 and must include the original receipt, packing slip, or invoice. For returns in-store of online orders, the refund will be credited back to the original payment method once the return has been processed. For SalonCentric.com Online Exclusive orders sold and shipped by third-party sellers, please see more details linked below for return steps.
The SalonCentric return policy does not currently apply to Kérastase & Shu Uemura purchases. Kérastase & Shu Uemura do not accept returns.
Click to see more details.
Rated 5 out of
5
by
Abbyrose from
Great heat protectant
I love how it smells and how it dosent weigh my hair down. It has a nice spray on it also.
Date published: 2026-04-18
Rated 4 out of
5
by
Loey from
its just alright
I dont think the price point is worth the results but it is still a good product. smells sweet.
Date published: 2026-04-16
Rated 5 out of
5
by
tiff from
One of my favorite heat protectants
A leave in and heat protectant all in one! Pairs perfectly with the leave in mask without weighing down the hair. A little goes a long way as well. Plus I love that you can use it on damp or dry hair
Date published: 2026-03-02
Rated 5 out of
5
by
Anonymous from
EXCELLENT PRODUCT!
Love this product for blowouts! it's conditioning and light!
Date published: 2026-02-21
Rated 5 out of
5
by
Raven from
Good stuff
I love it, its lightweight and moisturizing and leaves the hair fluffy:)
Date published: 2026-01-27
Rated 5 out of
5
by
Keen from
Buy it !!!!!
Absolutely love this product, and how it makes my hair feel along with the protection it offers . It also does not weigh down my fine hair which is a bonus .
Date published: 2026-01-22
Rated 5 out of
5
by
Bailey from
10/10 I love this product
Heat bounce is a staple for my clients salon experience and how they continue to keep it up at home! I always love to recommend this
Date published: 2026-01-22
Rated 5 out of
5
by
Linds from
Don't hesitate, just buy it.
One of my favorite hair products I have ever used. It makes my hair incredibly soft and it feels so healthy! I also have an 11 year old and her head is so sensitive and of course she insists on having long hair. I use this on her hair and I can actually brush out the knots she gets without hurting her at all! (with a wet detangling brush) This is such a great product, if you are on the fence just do it you will NOT regret it!
Date published: 2025-12-10
Rated 5 out of
5
by
Chaiii from
amazing!
It smells good, doesn’t leave hair feeling heavy, and it keeps my hair soft after styling
Date published: 2025-10-14
Rated 5 out of
5
by
Cabellos from
amazing
Everything about this product is amazing. The shine on everyone's hair is incredible, it's not too heavy and it smells amazing
Date published: 2025-09-26
Rated 5 out of
5
by
Stephanie from
So far so good
I have loved the K18 line and was excited to try the leave in conditioner. It has a great smell that is not too strong. It is also a great leave in for my type 4 hair with extensions. I can use it generously without weighing down the extensions.
Date published: 2025-09-12
Rated 5 out of
5
by
Jenna from
great heat protectant!
I love this heart protectant! It doesn’t add weight to my hair and has a nice smell.
Date published: 2025-09-06
Rated 5 out of
5
by
Shane from
Can't go without this.
I love this leave in conditioner/heat protection combination! You should use it on wet and dry hair. This makes detangling a breeze and once you blow dry, your hair will feel better than it did before you started. The heat protection works better than anything I've ever used before because it works inside the hair not just the surface.
Date published: 2025-09-05
Rated 5 out of
5
by
Nikki from
lightweight
This is lightweight and yet moisturizing. I have fine hair and I can put it on dry hair as well.
Date published: 2025-09-04
Rated 5 out of
5
by
draya from
Love love love!
Love this product, makes my hair so soft when I blow it dry and my clients love it as well.
Date published: 2025-08-20
Rated 5 out of
5
by
sarah from
amazing
This stuff is awesome. I have fine thin hair and I’ve been waiting for them to come out with a conditioner and a heat protector. Love that it’s a two and one. Doesn’t weigh my hair down and another great addition to the K team team.❤️
Date published: 2025-08-15
Rated 3 out of
5
by
Pickygirl from
still frizz
It claims it helps frizz too, but not the case with me. I used on towel dried hair and I didn’t notice any noticeable difference with my other leave ins I use. I will try on dry hair before flat iron to see if that works better. If not, returning.
Date published: 2025-08-12
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