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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Most Helpful Customer Reviews

Works great!

I liked the product and would consider repurchasing.

4
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Does its job

I use another product from Birchbox that works well & smells nice. This product worked fine but I like the scent & results of the other product better.

1
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good product

This product works fine, but I use a comparable product at a lower price point.

4
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Not bad at all

It detangled my hair somewhat and it definitely reduced the frizziness. It does the job but I didn't see any dramatic improvement in my hair.

4
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Great Scent

I loved the scent of this product, but I have tried a lot of detangling/condition sprays and I didn't think this one was super effective.

3
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Works pretty well...but not great

I liked this product but didn't love it. It did help as a detangled & made my hair slightly less frizzy. However, didn't love the smell & didn't think that it did a good enough job that I would ever buy it.

4
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No. 4

I tried the No. 4 prep & protect on damp hair and let it air dry before finishing up with the blow dryer. I didn't find that it made a difference to my hair. I could have skipped this product before blow drying.

3
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Great Prep and Protector

This is a really nice product. I have very curly hair and it eliminated my frizz and really protected it for 48 hours!

5
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It works fine

I wasn't overly impressed with this product. It works fine in terms of detangling, moisturizing and protecting, but it didn't smell as good as the product I normally use.

3
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Just ok

I didn't like the scent of this product. It seems to condition nicely but I can't stand the heavy smell

3
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