Number 4 Number 4 Thermal Styling Spray

While the hair of our dreams is glossy and sleek, our real hair leaves a lot to be desired. Whether your hair is fried and dull from too much heat styling or naturally frizzy, protect it with this nourishing spray. It’s packed with proteins and conditioners that hydrate and heal damage. An added bonus? It’s 100 percent vegan and free of gluten, sulfates, and parabens.

Number 4 Number 4 Thermal Styling Spray
3.9 out of 5 stars, based on 2,066 Reviews 2,066 Reviews
3.9 out of 5 stars
5 Star
660
4 Star
793
3 Star
433
2 Star
134
1 Star
46
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I can't get past the stench.
Sampled

It may be a good product but it smells so bad I can't stand to use it. I threw it away after I was sick of the smell after one spray.

1
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Works great!
Sampled

I used this when flat ironing my hair, and it was the first time I was able to get my hair as nice looking as when it's straightened in the salon. I've used a ton of products to help with thermal styling/straightening, and this is probably the best I've come across so far.

5
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very nice
Sampled

my hair is colored, so this is gentle and nourishing! I love that it is sulfate free as I use all sulfate free products on my color treated hair.

4
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Love it.
Sampled

I love everything about this product. It works well on my fine hair--especially now with the summer humidity. I also love the smell of Number 4 products. So fresh and clean!

5
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Makes my hair feel great
Sampled

I have bleached hair that's basically dead, and this stuff does the trick. Even after blowdrying, my hair feels dense and straight and not frizzy - I was super impressed. After using it a few times I've really noticed an improvement.

5
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Awesome
Sampled

Love this product I have gotten it a few times it's very light not heavy like regular spray def worth a try

5
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Works great for heat styling
Sampled

I really like this product. I spray it on damp hair before i blow dry, then use my hot rollers. It protects my hair really well and the curls hold all day!

4
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Great
Sampled

Definitely a great product to protect your hair against hot tools - without leaving any residue in you hair. I use it when i flat iron my hair directly spraying onto sections of hair and it works wonderfully.

5
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Works great, weird smell
Sampled

I love how this product works, it gets the job done. I can blow dry my long frizzy hair and, if the weather is right, not have to flat iron it to get the frizz out when I use this spray. It just smells kind of like old lady perfume and watermelon. The scent doesn't overpower perfume, but I prefer to use products that make my hair smell good, and while this one works great, it just smells .... different.

3
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Not a fan

This product left my hair feeling dry and frizzy at the ends and I found it difficult to straighten after I sprayed it

3
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