Editor's TipEditor's Tip

Keep hair healthy from start to finish with Number 4 Birchbox Exclusive Hair Revival Kit.

Number 4 Hair Care

Birchbox Breakdown

Situation: Your hair is dry and brittle and you’re a few weeks (perhaps a few paychecks) away from a trim. Solution: A super-hydrating leave-in treatment. We’re partial to Number 4’s™ Lumiere d’hiver Reconstructing Masque because it infuses moisture and protein (the two things that hair needs most!) into strands, leaving our hair soft, shiny, and in far better shape than it was before.

How it Works

Soy protein works to reconstruct and strengthen hair while natural conditioners like shea butter, jojoba seed oil, and sunflower oil nourish and moisturize. Don’t forget about the silkiness factor — for that, there’s silicone polymer, which smoothes and detangles.

How to Use

After shampooing, wring excess moisture from hair. Apply evenly to hair starting at the ends and working your way upward to your scalp. Wait for two to five minutes, then rinse thoroughly.

Water, Cetearyl Alcohol, Cyclopentasiloxane, Dicetyldimonium Chloride, Polysorbate 60, Glycereth-26, Behentrimonium Methosulfate, Brassicamidopropyl Dimethylamine, Cetrimonium Chloride, Lactamidopropyl Trimonium Chloride, Cyclohexasiloxane, Fragrance, Divinyldimethicone/Dimethicone Copolymer, Amodimethicone, Cetrimonium Bromide, Jojoba Esters, Methyl Gluceth-20, Panthenol, Behentrimonium Chloride, Dimethiconol, Gluconolactone, Citric Acid, Guar Hydroxypropyltrimonium Chloride, Hydrolyzed Soy Protein, C11-15 Pareth-7, Sodium Benzoate, Butyrospermum Parkii (Shea Butter), PEG-45M, Polyquaternium- 37, Laureth-9, Propylene Glycol Dicaprylate/Dicaprate, Glycerin, Benzyl Salicylate, Hydrogenated Vegetable Oil, Mangifera Indica (Mango) Seed Butter, Butylphenyl Methylpropional, Trideceth-12, C12-13 Pareth-23, C12-13 Pareth-3, Linalool, Hydroxyisohexyl 3-Cyclohexene Carboxaldehyde, Cocos Nucifera (Coconut) Oil, Simmondsia Chinensis (Jojoba) Seed Oil, PPG-1 Trideceth-6, Helianthus Annuus (Sunflower) Seed Oil, Sodium Ascorbyl Phosphate, Macrocystis Pyrifera Extract, Ribes Nigrum (Black Currant) Leaf Extract, Yogurt Extract, Arctium Lappa Root Extract, Camellia Sinensis Leaf Extract, Chondrus Crispus (Carrageenan) Extract, Euterpe Oleracea Fruit Extract, Garcinia Mangostana Peel Extract, Hibiscus Sabdariffa Flower Extract, Ilex Paraguariensis Leaf Extract

More for You!
  • Free returns within 90 days of purchase
  • Extra samples and gifts in the Bonus Shop

Product Reviews & Sample Feedback

3,612 Reviews
3.9 out of 5 stars
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1245
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1282
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697
2 Star
220
1 Star
168
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Most Helpful Customer Reviews

Some difference.
Sampled

I do feel like it has improved my hair a bit. Smells good and has a good texture. I would use again.

3
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Good!
Sampled

While I can say that this product did exactly what it has intended to do awesomely. I just cannot get past the overwhelming fragrance. If one can do that. Then this is a perfect match

3
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Love No. 4
Sampled

I have dubbed these samples as my movie star samples because that is exactly what they do for your hair. This mask is no exception, delivering exactly what it promises. A true winner!

5
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Alright
Sampled

This was okay. I never need to use a mask but I tried a little bit. Made my hair super oily, but mainly because, again, my hair doesn't need it. It should be okay to use for more damaged hair though.

3
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Moisturizing
Sampled

My hair felt soft and hydrated after this masque. My ends were not dry like before and it smells really nice.

4
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Great Hair Masque
Sampled

This product helped so much with my hair reconditioning. I don't do a whole lot to my hair, however, it still tends to get a lot of split ends - this treatment helped soften and revive my hair.

4
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Great hair mask
Sampled

Great hair mask. Leaves hair smelling great and looking way less dry. Would definitely recommend others to try this one.

5
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This stuff is legit!
Sampled

I used this product before my regular shampoo/condition routine, and left in my hair 2-5 minutes before rinsing, as per instruction.

The next day, my hair was fabulous!
The color was more vibrant, the texture was soft and silky, and overall I had a lustrous, healthy look to my hair.

I'm VERY happy with this product!

5
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Not bad conditioning but smell leaves something to be desired
Sampled

Decent job conditioning, with good texture to my hair after towel drying. However, as with the shampoo, the smell is overpowering and unpleasant which is a major factor against purchasing.

3
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Serious Stuff
Sampled

I used this along with the shampoo and conditioner. It brought my dry hair back to life. My hair was moisturized, sleek and shiny. Amazing results, just wish the price was better.

5
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