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

Pretty dense!
Sampled

Smells pretty crazy (perfumey) but it's nice and thick. Wonderful. I only had one use out of the packet (lots of hair) so my experience is based on a small sample. Felt good and blowed out nicely!

4
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Wasn't that fantastic
Sampled

I was very excited to use this, but my expectations were a bit high. It weighed down on my hair, and made it feel detergenty.

2
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Works!
Sampled

After using this product, my hair felt smooth and shiny. I don't usually like leaving products in my hair but this was easy to use and I can tell it really works. I highly recommend it!

5
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Loved it
Sampled

I love the smell, the texture (so creamy) and it was a wonderful detangler and treatment for my very curly, thick, dry ball of fluff. I mean, my hair.

5
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4
Sampled

Love this masque! Smoothing and hydrating...not heavy or greasy. Smells nice and clean. A great masque, highly recommend it... Hair feels smooth and healthy!

5
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love
Sampled

love this masque! smelled good and left my hair soft and smooth. got a couple uses out of the sample pack.

5
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Unsure
Sampled

Tried the product and my hair felt softer after I washed it, but I don't know if I reaped the full benefit of the product. My hair is fine, so although it was soft, it was a little greasy.

2
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0

this was ineffective for me. i have long, bleached, thick coarse hair. it will take a lot more to make me see and feel a difference.

1
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No.4 BEST PRODUCT EVER
Sampled

I am so in Love with the No.4 Product Line. No let me tell you, this No.4 Reconstructing Mask made my hair feel so incredibly soft and manageable. This is definitely one of those products I am hoping to purchase and have the chance to use more often. My hair NEEDS No.4! Thank You Birchbox for offering such incredible opportunity's to try Number 4 Products! Cause I AM IN LOVE WITH No.4!

5
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Perfect finishing touch!
SampledPurchased

This is the perfect finishing touch! I love this product. I use it after shampoo 2 times per week and it works like magic. It leaves my hair soft, hydrated and manageable. Is you have curly/wavy hair, you should definitely try it

4
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