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

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Most Helpful Customer Reviews

amazing
Sampled

I will always remember this brand because it is a miracle worker, I love it! Too bad it's so expensive.. I tried this product right after color treating my hair and not only did it look like it repaired the damages from color treatment, my hair looked better than before I colored it!!

5
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Good product.
Sampled

I'm very happy with this sample. I will purchase this for sure. Makes my hair feel like I left the salon

3
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love this!!
Sampled

I have really thin hair that tends to fizz at the ends and after using this once my hair was no longer frizzy and was silky smooth!! I defiantly would buy this except for the high price

5
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Noticeably better hair
Sampled

I don't really like to use conditioners because i feel it makes my hair too oily. This product makes my hair feel smooth, untangled, and light without the oiliness.

I have black-brown, Asian hair and I live in the south where humidity is abundant. After only one use of this product I felt like my hair was much more tame and manageable.

My only complaint is that it came in a ketchup-like packet of a sample. It made it difficult to "use sparingly" as instructed.

4
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nice
Sampled

I liked this very much. It smells absolutely delicious just like the shampoo. It could be slightly more moisturizing for my taste but I would totally purchase the full size.

4
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Not a big sample
Sampled

I had enough for a one time use, but it worked really well. I usually like to try hair products several times in a row to get a good feel on how it works with my hair, but this did make my hair soft and shiny, and it smelled amazing!

5
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not a big fan
Sampled

this is not a product line i am a big fan of. Dont care for the smell of this masque at all. I liked the immediate feel but the next day i felt like my hair hadnt been washed in days. Just didnt leave a clean feeling at all.

3
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Just OK
Sampled

I used this in combination with the Number 4 shampoo and while it's not a horrible product, I'm not super impressed. Maybe just my preference but I'm not a fan of the smell (I feel like my hair smells like an old man), and I don't think it made it any shinier. It does feel moisturized though, so don't hate but don't love.

3
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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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