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 still a few weeks away from a trim. Solution: This super-hydrating restorative treatment. Soy protein works to reconstruct and strengthen hair while natural conditioners like shea butter, jojoba seed oil, and sunflower oil nourish and moisturize—leaving our hair soft, shiny, and in far better shape than it was before.

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

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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
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:)

I loved it. It is nice and smooth and clear i love it i wish i still had some left.yay

4
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Works great
Sampled

I used this when my hair needed a boost. It made my hair look much healthier, softer and smelled nice.

4
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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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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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Love It!
Sampled

It smells really great and leaves my hair super soft. Definelty something i would buy again and recommend to a friend!

5
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Fantastic

I have 3b curly hair and this product was great. I've had this sample hanging around for a while and now I'm looking,to purchase a full sized bottle. I'm always a bit skeptical when products aren't specifically made for my type of hair but so glad I tried it.

5
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Great Masque!
Sampled

I love this masque! It repaired a lot of the damage my hair has sustained from various heat tools and brought the body back into my hair. It also smells lovely!

5
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hair felt softer and smoother
Sampled

i used this hair masque overnight. my hair definitely felt softer and smoother afterwards. my one quibble with this was the scent --i didn't find it pleasant, but i also didn't find it unpleasant--it was just so-so.it loses a star for that.

4
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Love it
Sampled

Love everything about it! Love the product, love the brand, love what it did to my hair!

5
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