15 best heat protectant sprays to defend your hair from damage
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Whether you're using your hair dryer on the lowest setting, or going for a slick and sleek style with hair straighteners, spritzing one of the best heat protectant sprays is an essential first step before picking up any kind of hot styling tool.
"Think of a heat protectant like a coat of armour for your hair," explains ghd global ambassador, Patrick Wilson. “Coating each individual strand, these clever formulas help the hair to lock-in moisture, and seal off the cuticle from getting damaged.”
By shielding the hair from direct contact with heat – and sealing in moisture – these miracle sprays and mists help to prevent dryness, damage, and breakage. The result? Sleek hair that look and feel much smoother, have serious shine, and take far less time to detangle, dry, and style.
A truly preventative measure, making heat protectant a non-negotiable part of your hair styling routine is key if you want to maintain a sleek and strong head of hair. After all — there's no point sleeping on a silk pillowcase or massaging a hair oil into your scalp every week if you're going to continually singe your strands every time you use your curling wand.
SKIP TO: Our full reviews | How do you use heat protection spray? | What ingredients should you look for in an effective heat protection spray?
Meet the experts:
Lewis Pallett | Celebrity Hair Stylist and Colourist. |
Patrick Wilson | ghd's Global Ambassador. |
How we tested heat protection sprays:
Throughout the years, GLAMOUR's editors have collectively tried hundreds of heat protectant sprays on our wide range of different hair types, textures, and lengths. From straight and fine hair, to textured and curly hair, it's safe to say that we've got all possible bases covered.
When reviewing each formula, we've scrutinised their ingredients and any claims that they make, assessing products on how quickly they dry, scent, to how effective they actually seem to be at reducing heat damage and whether they leave your hair feeling tacky. Read more about how we test here.
Ahead, our fave heat protectant sprays for keeping your hair healthy and happy in 2025.
Your heat protectant FAQs, answered:
How do you use heat protection spray?
In order for your heat protection spray to form a proper barrier between your hair and hot styling tools, you'll need to do more than just a quick spritz over the top of your head. “A good technique is to hold the spray bottle in one hand, and grab your hair with the other, and basically lift and drop each section while continuously spraying," Lewis explains.
It doesn't matter whether you're styling freshly-washed hair from scratch, or just doing a quick touch-up on day two or three, the spray has to be applied whenever you use even the smallest amount of heat. And remember to spritz it before you go in with any products like styling cream or mousse. “Everybody needs to be using some kind of heat protection spray — regardless of their hair type," Lewis adds.
But remember — although coating every single hair is definitely the aim, you'll need to wait for the formula to fully dry before getting out the straightener or curling tong if you want to avoid damage. In a hurry? A gentle blow dry will speed up the process.
What ingredients should you look for in an effective heat protection spray?
“First and foremost, you want to specifically look for protecting polymers,” explains ghd Global Ambassador, Patrick Wilson. “These are the heroes that form that smooth, protective barrier, stopping those cuticles from lifting and giving you that sleek finish we all adore.”
Next up; conditioning agents. Designed to attract and retain moisture, natural humectants like glycerin, hyaluronic acid, and aloe vera are often present in heat defence sprays thanks to their hydrating properties. “Conditioning agents are essentially the nurturing side of the equation,” Patrick adds. “Keeping your hair hydrated and supple, they work together with those all-important polymers to give you a smooth, healthy, and heat-protected mane.”
Strengthening ingredients like amino acids and keratin are also worth looking out for if you're dealing with damaged hair, as they can really help prevent breakage, and are also rich in nourishing antioxidants. Had your hair coloured or bleached? “Don’t forget to look for protection from UV rays in your heat protectant formula, as this will help protect your tresses from fading and discolouration,” Patrick adds.