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: This super-hydrating leave-in 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

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 17 of 21 found this review helpful. Was this review helpful to you? Yes | No
:)

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

4
Was this review helpful to you? Yes | No 3 of 3 found this review helpful. Was this review helpful to you? Yes | No
Works great
Sampled

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

4
Was this review helpful to you? Yes | No 3 of 3 found this review helpful. Was this review helpful to you? Yes | No
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
Was this review helpful to you? Yes | No 3 of 3 found this review helpful. Was this review helpful to you? Yes | No
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
Was this review helpful to you? Yes | No 4 of 4 found this review helpful. Was this review helpful to you? Yes | No
Great conditioner
Sampled

I used this hair masque on my recently colored hair and I really liked the results. It nourished and rehydrated my dry locks. The masque has a clean smell. It is really nice to use after using the No. 4 shampoo.

4
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My fave
Sampled

One of the best Haircare products I've received in my Birchbox. Left my thick and frizzy hair feeling clean and light, not heavy and weighed down. Highly recommend!

5
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pretty good
Sampled

The sample was pretty small, I get about 1.5 uses out of it, but for what I did get I think it worked well. Smells great too.

3
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Lovely smell, light weight
Sampled

Love this product! It is very hydrating, but does not leave my hair greasy. Light weight, great smell, and does not weigh my hair down.

5
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Not sure if this product is for me.
Sampled

I used it, and it made my hair dry and constricted. I have light blonde hair, so its very easy for it to become dry, and so I could have used it wrong, but still, it didn't work out.

2
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