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

Amazingly awesome!!
Sampled

One of the best products I have received thus far during my one yearsubscription to Birchbox! Light weight, non oily, and leaves my hair looking super awesome and feeling soft. Not to mention I do not have a single tangle when it comes time to comb out my hair! A+ for this one!

5
Was this review helpful to you? Yes | No 15 of 19 found this review helpful. Was this review helpful to you? Yes | No
No. 4 Fan
Sampled

I want to be really careful when treating my hair because it gets damaged easily with daily use from washing, hair drying, hair dying, heat, environment, etc, but since I've been introduced to the No. 4 line through Birchbox my hair has been, looks and feels so much healthier.

5
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Not bad, but not great
Sampled

This is a nice average shampoo/conditioner . It works, but other works, but others are better...just not for me

3
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Number 4
Sampled

I thought this product worked great. It left my hair soft, light and shiney.

4
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great masque!
Sampled

I loved how my hair felt SO soft after using this masque. I would definitely consider buying, but I already have a product that I'm stuck with. The smell wasn't anything spectacular, but it wasn't bad. Pretty mild!

4
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Amazing conditioner
Sampled

This treatment made my hair super soft and flexible. My hair was tangled free.

4
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First time use
Sampled

This was my first time using this brand and I was very pleased! Nice smell! With my thin hair, I can always use hair products with reconstructing benefits! I am grateful for this sample, but I will probably never buy because of the price!

4
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Did not like the smell
Sampled

This product did what any shampoo would do. I didn't find it very effective. I really did not like the smell. For some reason the smell reminds me of kitty litter, and for that reason, I will not be purchasing this product.

3
Was this review helpful to you? Yes | No 1 of 1 found this review helpful. Was this review helpful to you? Yes | No
Not bad!
Sampled

This product made my hair softer but the results on my ends were negligible. Not as effective as the Macadamia Nut masque but still a good buy. The brand is very attractive to me and I've purhased other products in the line.

4
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Too Pricey
Sampled

Worked well, smelled nice, but a little pricy for my taste.

3
Was this review helpful to you? Yes | No 1 of 1 found this review helpful. Was this review helpful to you? Yes | No