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!
  • Product orders $50+ and all monthly box brands ship free
  • Free returns within 90 days of purchase
  • Extra samples and gifts in the Bonus Shop

Product Reviews & Sample Feedback

257 Reviews
4.2 out of 5 stars
5 Star
315
4 Star
285
3 Star
141
2 Star
35
1 Star
28
Hair type
Curly
Dry
Fine
Frizzy
Kinky
Normal
Oily
Straight
Thick
Wavy
Hair color
Brown
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Black
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Red
Other
Age
17 & under
18-24
25-34
35-44
45-54
55 & over
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Most Helpful Customer Reviews

Smells wonderful

I was very excited to use this product, I have dry colored thick long hair and can always use a deep conditioner. I was not that impressed. My hair did not feel at all soft and was not very easily manageable after this. The smell was good but my hair was just not as soft as other products.

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Love this!
Sampled

I received both this and the clarifying shampoo in my box. My hair hasnt looked, smelled, or felt this great since mt teens!! I literally logged in just to buy it... then I saw the price. It really is great stuff! But I cant justify paying that much for hair care.

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Love love love!
Sampled

Omg love this conditioner. Perfect for everyday use for me. Deep, rich, moisturizing. Must buy! How did I live without this? Nothing short of a miracle.

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Amazing
Sampled

This was one of the most effective hair masks I have used. My hair looked and felt amazing after using it!

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Great!
Sampled

This masque, used in place of conditioner, made my hair shiny and very easy to brush through. I wouldn't buy it personally, it's out of my budget!

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Not for me
Sampled

The smell is very strong and "older". I prefer light floral scents. Also I didn't feel like it did much for my hair except make it less tangled and alittle dull.

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GREAT!
Sampled

Enjoyed this product! Minimal smell, and I'm really sensitive, so this was wonderful!

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Not a very effective masque
Sampled

I did not find this a very effective masque - it smelled nice but was not very moisturizing.

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Good but too pricey
Sampled

I really liked this hair mask, it smelled great and did a good job. BUT, it wasn't out of this world for me. Not enough to pay $58 for it anyways, I think the OJON masks work a lot better! That's my opinion of course.

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pricey
Sampled

I really liked this. My hair was so silky but very expensive.

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