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

More for You!
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Product Reviews & Sample Feedback

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Most Helpful Customer Reviews

Works great for Detangling

This product works very well for detangling hair! I wasn't very fond of the smell or the cost.

3
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:)

I never use heat on my hair so I cannot talk on behalf of its heat protection. But I live in Florida where the humidity is awful right now. And this product did a great job keeping the frizz away.

4
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Great protection

I really like this leave in conditioner and will be purchasing it once I finish using up my current supply of hair product. What I really like is that it includes conditioning, heat and UV protection all in one. I have color treated red hair that is very prone to fading without protection. Right now I'm using 3 different products for all of this so I'm happy this one product does all three very well. The smell isn't amazing but it certainly isn't bad either.

5
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Leave-in conditioner with great scent

Loved the smell of this leave-in conditioner. It works well in my thick, curly hair. Great under my regular styling mouse.

4
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Smells Ah-MAZ-ing!

I LOVE No. 4. This brand makes some amazing products, all of which smell fantastic. Not only do they make my hair smell like I just got it done in a professional salon(because the way my hair smells is the best part, imho), these products actually work. I will more than likely buy more of this when I run out.

5
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Good - but overpriced

I liked this product - it did what it claimed. I was able to comb through my hair easily after using and it felt smooth. However, it was just a bit expensive in my opinion. There are other products out there that do an equally good job for less.

4
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Better Hair in 2 sprays

My hair is dry from sun exposure. I used this spray and my hair is soft and shiney again. I recommend to any person in need of hair repair.

5
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Love

Received with my birchbox and not only does it have a great smell but it left my hair feeling soft without feeling greasy.

4
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Best Leave In Conditioner Spray, ever.

I have tried countless drug-store brand leave-in conditioners, conditioner sprays, etc., and I use them once and realize my hair is weighed down and oily looking. This is the complete opposite! I get compliments on my hair, and don't feel greasy or weighed down at all. This is, hands down, the best product of this type I have ever tried.

5
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Just Ok

The product seems to help remove tangles, but I was more concerned about its ability to heat protect and eliminate frizz. After use, I do feel like my hair is more conditioned. However, I don't believe that it did much to eliminate or prevent my hair from being frizzy. The smell wasn't my favorite, so I probably will keep looking for another product.

3
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