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™ Thermal Styling Spray
3.9 out of 5 stars, based on 2,200 Reviews 2,200 Reviews
3.9 out of 5 stars
5 Star
700
4 Star
835
3 Star
462
2 Star
145
1 Star
58
my profile
people who
purchased
sampled
Hair type
Thick
Fine
Straight
Wavy
Curly
Frizzy
Kinky
Dry
Normal
Oily
Hair color
Brown
Blonde
Black
White or gray
Red
Other
Age
17 & under
18-24
25-34
35-44
45-54
55 & over
Apply
Works
Sampled

Smells great and works. I am always skeptical of products claiming to tame frizz. It takes a lot to tame my frizzy hair. But this works well. Made my hair softer and smells great. I feel like it took less time to dry my hair, too.

5
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effective but oily
Sampled

this spray was effective at making my hair glossy and sleek but be warned that it's rather slick and will leave your hair feeling oily. i prefer the beauty protector brand,which is also sold from birchbox.

that being said, if you're going for a very sleek or even wet look, this might be the product for you. if you're just looking for manageability, you might want to look elsewhere.

3
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firm hold
Sampled

this product made my hair feel like fake doll hair, firm and lifless i was very disappointed with how it felt for the rest of the day

1
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Sample size sold me
SampledPurchased

I got this in one of my monthly boxes and thought it was great. Few sprays, finish up with heat appliances and hair looks great.

4
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Ok product
Sampled

Cool product but it left my hair limp. I didn't find it to add any benefits

3
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Leaves hair feeling dry, but provides plenty of volume when styling.
Sampled

This product makes my hair feel excessively dry compared to other products that I have used. It does however, give my hair plenty of body when styling.

3
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Overpowering smell
Sampled

I'm not sure if this works ok. I don't use hairspray and couldn't get past the overpowering smell to try it out.

2
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Looks can be deceiving
Sampled

But don't give up what is in the inside. The product works well. It is getting it out is the problem. The sprayer didn't work that well.

2
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Love it!
Sampled

I curl my hair regularly, and that can do some serious damage. This definitely protected my hair and added shine. The smell was great too. I have other heat protect products, but when that's finished, I will definitely be considering this product next!

4
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Volume
SampledPurchased

What a surprise! I put this on my very fine hair when damp. And after blow drying I had a great deal of volume.

5
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