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Thermal Guard Weightless Leave-In

A weightless leave-in designed to protect hair from heat styling.

£22.00
One-click checkout with Shop Pay
Bio-based materials

Bio-based materials

Reduces styling time

Reduces styling time

Precision parting

Precision parting

Bounce Curl Thermal Guard Weightless Leave-In is a multitasking, lightweight leave-in conditioner and heat-protecting primer that hydrates, detangles, smooths, and helps reduce breakage. Powered by PGenics™ Hydra and Volunix Bio-Actives™ , it supports moisture retention and provides heat protection up to 450°F*, leaving hair soft, smooth, and weightless.

HAIR TYPE

  • Texture: Fine, Medium, Coarse
  • Hair pattern: Wavy, Curly, Coily
  • Concerns: Dryness, damage, tangles, heat exposure

WHY YOU'LL LOVE IT

Bounce Curl Thermal Guard Weightless Leave-In is your 6-in-1 multitasking, heat-protecting primer and leave-in conditioner that hydrates, reduces breakage, detangles, and protects hair from heat up to 450°F*, leaving hair soft, smooth, and weightless.

Featuring PGenics™ Hydra, a patented peptide exclusive to Bounce Curl, composed of water-loving amino acids designed to help attract and retain moisture while supporting a healthy-feeling scalp and smoother-looking hair for hydration without the heaviness.

Instrumentally tested and mindfully formulated for textured hair, it merges clean science with real performance for hair that feels hydrated, smooth, and ready for heat styling.

*Instrumental testing. 
  • 6-in-1 solution: Heat protection, priming, smoothing, detangling, breakage reduction, and weightless performance in one step.
  • Heat protection up to 450°F: Powered by Polyporus Umbellatus (Mushroom) Extract and Sodium Hyaluronate to help protect hair from heat damage and reduce dryness and breakage.*
  • Reduces hair breakage: Instrumental testing shows a reduction in hair breakage.
  • Patented Moisture Technology: PGenics™ Hydra is a patented peptide exclusive to Bounce Curl that’s a blend of water-loving amino acids designed to help attract and retain moisture while supporting a healthy-feeling scalp and smoother-looking hair for hydration without the heaviness. 
  • Featherlight finish: Delivers meaningful hydration with a barely-there feel—ideal for fine to medium textures.
  • Luxe Scent: Desert Cream Rose opens with dewy rose, pear, and peony, then settles into sunlit rose, warm woods, soft musk, sandalwood, vanilla, and golden amber for a sensual, serene finish.

KEY INGREDIENTS

Sodium Hyaluronate: A humectant that attracts and locks in moisture, delivering deep hydration without weight.

PGenics™ Hydra: A patented peptide technology exclusive to Bounce Curl, composed of water-loving amino acids designed to help attract and retain moisture while supporting a healthy-feeling scalp and smoother-looking hair for hydration without the heaviness.

Polyporus Umbellatus (Mushroom) Extract: An antioxidant-rich extract that helps fortify strands and provide protection against frizz and heat.

Baobab Oil: A silky, nutrient-dense oil that nourishes and smooths, leaving hair soft and shiny.

INGREDIENTS

*Organic Aloe Barbadensis Leaf Juice, Propanediol, Cetearyl Alcohol, Adansonia Digitata (Baobab) Seed Oil, Water, Sodium Hyaluronate, Glycerin, Sorbitol, Trehalose, Galactoarabinan, Xylitol, Tilia Tomentosa Bud Extract, Palmitoyl Tetrapeptide-8 Amide, Polyporus Umbellatus (Mushroom) Extract, Salvia Hispanica Seed Extract, Amaranthus Caudatus Seed Extract, Sodium Citrate, Sodium Phosphate, Dicaprylyl Carbonate, Fructose, Pentylene Glycol,1,2-Hexanediol, Caprylyl Glycol, Malachite Extract, Cetrimonium Chloride, Sodium Benzoate, Gluconolactone, Fragrance, Benzyl Salicylate, Limonene, Linalool, Linalyl Acetate, Terpineol, Tetramethyl Acetyloctahydronaphthalenes, Vanillin 

*Certified Organic

Our formulas are continuously evaluated and may be updated over time. For the most accurate and current ingredient information, please consult the ingredient list on your product packaging.

CERTIFICATIONS, PATENTS, & CLAIMS

Heat protection claim: Instrumentally tested and shown to protect hair from heat damage up to 450°F when using a flat iron.

Breakage reduction: Shown to reduce hair breakage.

Dermatology tested: Non-irritating.

Toxicologist audited: Reviewed for safety.

Patented technology: Features patented PGenics™ Hydra.

Vegan + cruelty-free: Not tested on animals.

Think Dirty rating: Rated 0–1 for risk.

Packaging: Made with 30% PCR recycled plastic.

HOW TO USE

Apply to wet hair: After washing and conditioning, section hair and mist the leave-in evenly from roots to ends.

Distribute evenly: Brush through to ensure even coverage.

Style as desired: Follow with your preferred Bounce Curl stylers and air dry or diffuse.

For heat styling: To use as a heat protectant, apply as directed, then blow dry before using hot tools.

How to use in a Bounce Curl routine:

Cleanse: Use Bounce Curl Weightless Shampoo and Weightless Conditioning Mask.


Prime: Mist Thermal Guard Weightless Leave-In evenly through wet hair and detangle.


Style: Proceed with air drying, diffusing, or blow drying. Use an EdgeLift Brush from roots to ends.


Finish: Enjoy soft, hydrated, and protected strands that feel light and resilient.

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Beatriz Ronquillo
En Ecuador lo amamos!

En Vanny amamos este producto por su ligereza e hidratación! Incluso cuando su textura es suave, brinda la protección e hidratación necesaria para nuestra melena!

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Evgenyia Glugan
My new must have

I’ve been waiting for Bounce Curl to come out with a heat protectant for so long, and it’s finally here! I already love their products, so I was really excited to add this one to my routine.
I blow-dry my hair regularly, so having a good heat protectant is important to me. The leave-in has a very lightweight texture, and the scent is a little different from their usual products—less fruity, which I actually really like.
This is definitely going to be a staple in my routine, especially on the days when I want to straighten my hair and give it some extra protection from heat.

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Amy
The Holy Grail for Fine, Curly Hair!

This is the FIRST and ONLY product that has left my fine, curly hair defined, shiny (but not GREASY), and light (NOT flat/weighed down). I used it just as a leave in conditioner and my hair has never looked this good. Bounce Curl, don’t change a THING! Please! This is the product of my dreams!

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Erin B.
My hair feels so healthy after using this

My hair feels so healthy after using this. I use it on my daughter with straight hair (very small amount in ends) and my daughter with high porosity curly hair. Her hair has been dry no matter what I've used, but this has made it so much softer. A little goes a long way. The smell is pretty, but I'll say here too, that I wish their was a fragrance -free option.

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Denise
Spray leave in is a game changer

Spray leave in is a game changer. I absolutely can’t get over the amount of control I know have over how much leave in goes into my hair. The added heat protection is everything! I am so impressed by this whole line! Obsessed!

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Addie
Easily detangles, and adds lightweight moisture

I usually have to use some sort of curl cream before any fixative, as my hair tends to be on the dry side. However, my hair is also super fine, so most creamy products can be heavy and leave my waves weighed down. This product helped me detangle and brush through my hair easily, and also provided the moisture I need, without weighing it down. I used the ceramide jelly on top for more hold. Plus, with my hair being so fine, it's nice to know this is a heat protectant also, to keep my fine hair healthy on days I diffuse.

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AyeMonet
Great products but you don't get enough for the price!

This is a great product! However, I am not crazy about the amount you get for the price. It is priced the same as the weightless lotion and that last A LOT longer than this spray. I think I would not buy it again and just use water. Especially since I am not one to put heat on my hair so the heat protectant aspect is not that important to me.

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Tamia G
Amazing Leave-In

The leave in was really lightweight on my palms and easy to rake in my hair. It smelled good too!

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Brandie
This is a standout product!

This is a standout product! My hair is soft but not too soft, I'm on day 4 and I used this as my only refreshment. I was able to finger comb my hair without disturbing the curls and, my hair is so shiny! Please offer this in a salon size.

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Anonymous
Smells amazing and leaves my hair soft

Smells amazing and leaves my hair soft.

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Anonymous
No frizz in the NYC heat

No frizz in the NYC heat.

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Sandra File
This one is my favorite of the entire line

This one is my favorite of the entire line. The fragrance is different from the rest of the collection and I like this one better! I wish the entire weightless collection would smell like this.
I love that it's a leave in with heat protection.

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Anonymous
I love it!

When I first tried this line I fell in love with my hair all over again. I used this with the ceramide jelly and my hair was alive again. My wavy curly hair was so defined with no frizz. I love the smell of this product and it’s not strong where it’s gonna give me a headache. My journey finding a good clean hair care is over. You got a customer for life!!🫶🏽

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AST
WAVY HAIR GIRLS REJOICE!

WAVY HAIR GIRLS REJOICE! I have 2b/2c wavy hair and it works so great at defining my waves while still providing volume and managing frizz. I use it with the weightless shampoo and conditioner.

The packaging is great, love the smell, and would highly recommend for wavy, fine hair. Plus the nozzle on the bottle is fantastic because it evenly distributes a fine spray in a large area, which I love. As someone who has tried many leave in conditions from the drug store, and luxury companies alike, this has been my favorite by far. Would highly recommend!

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Tyka
Fantastic

I love the heat protection with this leave in. It’s also super light and the spray application is great. I usually have trouble with leave ins being too heavy and weighing down my curls, but this one has lived up to its name. Definitely a new staple in my routine.

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Janet
The only Leave-in my Curls Need

This is the best leave in product that I have ever used for my 3C curls. It truly does everything you want in one product. It detanges beautifully, provides heat protection, and works as a leave-in conditioner that leaves my hair soft, shiny, and healthy wit no frizz. I also love that it works on dry hair to refresh my curls. It's become a must-have in my hair routine!

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hannahmurray23_

I’m really impressed with this leave-in. The mist is super light, so it doesn’t make my hair greasy or heavy, but it still gives great slip for detangling and makes my ends feel smoother. I use it after washing on damp hair, brush through, and then blow dry or diffuse, my hair looks softer, feels more hydrated, and I get less frizz and less breakage from styling. Also love that it protects up to 450°F!

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dayanakafernaoui

It feels super light on my hair but still keeps it hydrated and smooth. My hair doesn’t feel heavy at all and it helps so much with frizz when I style it with heat. Honestly just makes my hair look healthier and softer. ✨

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gracedvornik

I love bounce curl and was really excited to try this product. It seems like a great product for anyone with curly hair who needs both conditioning and heat protection. Plus the packaging is super cute!

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petite.sweets

I love the scent on this. Although the product sprays out and seems thick, it actually works into the hair and doesn’t weigh it down. My hair feels soft and bouncy even after I add heat to it and style it. I like the texture of my hair and doesn’t dry out. It’s a great product.

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parisaonthego

This is one of the best hair protection sprays I’ve ever used. It’s so lightweight, smells really good, and meets my expectations. If you’re looking for a really good heat protectant leave-in spray, I would highly recommend this one.

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sandysantiago_

I like to typically diffuse my curly hair but never knew which heat protectant to use for my curly hair. I didn’t want the heat protectant to take away from all the styling but this has been perfect. Not only is it a leave-in but it works as a heat protectant. I also really love the scent of this product which is quite different from all the other products from the line.

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itsyanachka

I love the new thermal guard weightless leave in by bouncecurl! It is perfect to treat my hair with after the shampoo and conditioner before styling my hair. It’s a great heat protectant and leaves my hair super soft

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prettylaize

As a stretched natural I absolutely love that this leave-in can also double as thermal guard heat protectant. With stretching my hair I love to use products that help protect my hair from breakage and leave it soft after blowing it out and this product did just that.

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fragrance_foxx

This smells DIVINE. I love the texture of this product, it gives my hair the slip it needs for detailing. I haven’t tried the heat protection aspect of it yet but I will say this makes my hair feel exceptionally soft!

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rosannacg

Bounce Curl Thermal Guard Weightless Leave-In is truly a multitasking essential, especially if you have wavy, curly, or coily hair. This 6-in-1 formula works as a primer and leave-in conditioner while delivering heat protection up to 450°F, making it perfect for anyone who styles hair with heat tools. What stands out the most is how lightweight it feels. The essence is really good.

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katebvw

I love this bounce curl weightless leave in product. It makes my hair look so smooth and shiny, but it doesn’t weigh down my hair at all. It really defines my wavy hair and I don’t have to style it with heat when I use this product.

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tryitwithliv

What an amazing leave-in!! The best I have tried for my curly hair! The Thermal Guard Weightless Leave-In first off smells amazing and a little goes a long way. I feel my hair being hydrated and nourished from this. I highly recommend to others with curly long hair!