Silicone-free heat protectant that helps protect against heat damage up to 230°C while fighting frizz and humidity.
Thermal Shield™ Heat Protectant
About the product
Stay on the defensive when it comes to heat. Thermal Shield™ Heat Protectant is a lightweight, silicone-free heat protectant that forms a natural protective film around each strand to help defend against heat styling stress. As a high-performance heat protectant spray, it’s powered by a 100% natural saccharide complex with mushroom extract and hyaluronic acid to help reduce protein loss caused by hot tools and keep your style smooth, glossy and frizz-free.
This silicone-free heat protectant helps protect hair during heat styling up to 230°C and supports long-lasting straight styles, even in humid conditions. If you’re looking for a reliable heat protectant for hair that combines performance and natural ingredients, this formula delivers.
Made with 99.3% natural-origin ingredients and 20.1% organic ingredients. No silicones, drying alcohols, sulfates or parabens.
How it works
Heat styling can weaken the hair fiber by causing protein loss and moisture imbalance. Our advanced heat protection spray for hair forms a lightweight, breathable film on the surface to help absorb part of the heat energy from styling tools, reducing heat accumulation and minimizing damage.
In ingredient testing at 230°C, the active complex showed:
- 23x more thermal defense vs. placebo
- +51% better straightening effect after one flat iron pass
- Improved straightening maintenance in 70% humidity for 24 hours
- Superior humidity protection compared to silicone benchmarks
This silicone-free heat protectant spray makes styling easier, supports longer-lasting results and reduces the need to repeatedly pass hot tools over your hair. It works as both a daily heat protectant for hair and a protective finishing step before straightening or curling.
Powered by natural performance ingredients, this silicone-free heat protectant combines a mushroom and sugar complex (Polyporus Umbellatus Extract, fructose and sodium hyaluronate) to form a lightweight protective film that helps shield hair from heat stress and humidity. Organic aloe vera and glycerin help maintain moisture balance and softness during styling, while sugar-derived moisturizers support hydration and reduce frizz and flyaways. Organic oat kernel and blueberry extracts help smooth the hair surface and provide antioxidant care. The result is softer, shinier hair with natural movement, without silicone buildup or heaviness.
Benefits
For all hair types
Paraben, silicone & sulfate-free
Made in Denmark
COSMOS Organic Certified
Vegan Society Certified

Key ingredients
How to use
Shake well and spray root-to-tip onto damp or dry hair before styling. Use Thermal Shield™ Heat Protectant every time before exposing your hair to excessive heat from hair dryers, flat irons or curling irons. This heat protection spray for hair helps ensure even coverage and optimal performance.
Customer reviews

Frequently asked questions
-
Why do I need a heat protectant?
Heat styling can leave hair dry, brittle and prone to breakage. This heat protectant for hair helps shield your strands from high temperatures up to 230°C, so you can style with more confidence and less damage.
-
What makes this heat protectant different?
Unlike traditional formulas, this silicone-free heat protectant uses natural film-forming ingredients instead of heavy silicones. It works as an effective heat protection spray for hair, helping defend against both heat and humidity while keeping your style smooth and glossy.
-
Will it make my hair greasy or heavy?
No. The lightweight formula is designed to protect without buildup or heaviness, making it ideal for fine, thick, curly and color-treated hair.
-
Does it help with frizz and humidity?
Yes. The breathable protective layer helps shield hair from humidity, reducing frizz and flyaways while helping your style last longer throughout the day.
-
What else can you do to prevent hair damage?
Although using a heat protectant spray is crucial in preventing heat damage, there are other ways to keep your hair healthy, like:
- Gentle accessories – Try hair accessories like a Bamboo Hair Towel Wrap, Silky Bamboo Pillowcase, or Wet Hair Detangler Brush to prevent damage.
- Nourishing hair masks – A weekly hydrating hair mask or Pre-Shampoo Balm can help protect your hair and reverse damage.
- Repairing shampoo and conditioner – The silicone and sulfate-free Split Fix™ Duo can help protect your hair and reverse damage.
- Protecting styling products – Adding a Sun Defense Hair Mist and Split Fix™ Hair Oil to your routine provides added UV and split-end protection.
Featured in
"The reviews of these organic (miracle) products from Denmark don’t lie."
Vogue
"It's just easy! You can't discuss the contents - it just works!"
ChriChri
"The hair gets renewed strength and stays on the head instead of ending up on the hair brush."
Alt for Damerne
"Hairlust is serious when it comes to hair and has taken hair care to the next level."
Elle
"Any hair care routine should contain Hairlust."
Costume







































