Editor's TipEditor's Tip

For ultra-healthy locks, apply Super Comb Prep & Protect after deep conditioning with Number 4 Lumiere d'hiver Reconstructing Masque.

Number 4 Hair Care

Birchbox Breakdown

As self-confessed blow dryer addicts, we put our hair through a lot of stress. To keep our strands from a styling-induced meltdown, we’ve been using this extra hydrating leave-in conditioning mist. It doesn’t just protect hair from heat damage; it also doubles as a color protector and UV shield. The sulfate-free formula sinks in quickly and has a pretty floral scent thanks to white freesia, amber, and musk.

How it Works

Natural conditioners—including black currant, soy yogurt, algae, and yerba mate—combine to restore hydration to dry hair, while the unique UV/Color Polar Shield protects dyed or sun-exposed locks. Soy and vegetable proteins repair damage caused by heat and chemical styling. And don’t forget about the defrizzing factor—anti-static technology tames flyaways, making hair more manageable and easy to style.

How to Use

After shampooing, wring excess moisture from hair and towel dry. Holding the spray bottle upright, spritz product evenly. Using a wide-toothed comb or your fingers, gently work the product through hair from root to tip. Style as usual.

eau/water, amodimethicone, peg-40 hydrogenated castor oil, cetrimonium chloride, glucose, panthenol, parfum/fragrance, cetrimonium carboxydecyl peg-8 dimethicone, sodium pca, citric acid, cinnamidopropyltrimonium chloride, trideceth-12, magnesium sulfate, hydroxyethylcellulose, trisodium ethylenediamine disuccinate, hydrolyzed soy protein, hydrolyzed vegetable protein pg-propyl silanetriol, glycerin, sodium ascorbyl phosphate, lactoperoxidase, glucose oxidase, macrocystis pyrifera extract, ribes grossularia fruit extract, ribes nigrum (black currant) leaf extract, chondrus crispus (carrageenan) extract, euterpe oleracea fruit extract, garcinia mangostana peel extract, helianthus annuus (sunflower) seed oil*, arctium lappa root extract*, avena sativa (oat) kernel extract*, camellia sinensis leaf extract, cymbopogon schoenanthus extract, hibiscus sabdariffa flower extract*, hydrastis canadensis (golden seal) root extract*, ilex paraguariensis leaf extract*
*certified organic by QCS

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Product Reviews & Sample Feedback

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Most Helpful Customer Reviews

Okay Product
Sampled

I have coarse processed hair. This product was okay but was not moisturising enough for my personal use. It may be better suited to persons with other hair type.

4
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Hair styling product
Sampled

This spray in conditioner felt great on my hair and smelled great also. I thought it was easy to use and didn't feel heavy.

4
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Love this

Great product for my thick, curly hair. It does exactly what it claims it will do. Glad I found this.

5
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Amazing Scent!
Sampled

I love this product so much. The scent is everything.

5
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Love
Sampled

It smells so good ! I think it makes a difference. Nice for thick dry hair.

5
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One of my favorites
SampledPurchased

This is one of my favorite go-to everyday hair products. I love blow drying my hair and this spray is very light weight while still offering protection. Love the rose scent too! I get a lot of compliments on it. Doesn't make my hair feel greasy.

5
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Smell!
Sampled

Great smell and really helped heal my fine, thin hair and split ends. Great detangler and hydrated my hair. Love these Number 4 products!

5
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Smooth hair but overpowering fragrance
Sampled

This product left my hair smooth and tangle free, but the smell was a little too potent for me. If you can get past a strong floral scent this could work for you.

3
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Super soft!
Sampled

Though I was skeptical because this summer seeming product arrived in the dead of Mid-west winter I really liked it. It has a nice light smell, that fades fairly quickly and made my hair super soft. It wasn't enough product to keep my hair from getting static in the extreme cold, but spritzing on a little more usually did the trick. I bet it will be perfect come summer.

4
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Nice Product
Sampled

Does exactly what it says it will do. Nice scent and my hair felt very good after blow drying. Would recommend.

4
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