Editor's TipEditor's Tip

You can use this mild shampoo every day without worrying about drying out strands. For best results, follow with L’eau de Mer Hydrating Condition and use Lumiere d’hiver Reconstructing Masque once a week.

Number 4 Hair Care

Birchbox Breakdown

Whether your hair is over-processed and brittle or just chronically dry, this is the shampoo for you. The satiny formula is gentle enough to use every day and helps to soften and hydrate strands with natural essential oils and extracts. Free of parabens and sulfates, it foams into a rich lather that leaves hair soft and shiny. Vitamin B5 conditions hair and silicone bumps up the gloss factor, while the brand’'s patented Liquid Complexes help protect, purify, strengthen, and revitalize hair.

How to Use

The concentrated formula goes a long way. Depending on hair length and thickness, apply one or two pumps of shampoo to your and work into a lather. Work into wet strands and rinse thoroughly and follow with Number 4 Hydrating Condition.

Water, Sodium Cocoyl Isethionate, Sodium Lauryl Sulfoacetate, Cocamidopropyl Hydroxysultaine, Disodium Laureth Sulfosuccinate, Sodium Lauroyl Sarcosinate, Cocamidopropylamine Oxide, Fragrance (Parfum), Divinyldimethicone/Dimethicone Copolymer, Glycereth-26, Glycol Distearate, Gluconolactone, Disodium Cocoyl Glutamate, Lauryl Alcohol, Decyl Glucoside, Quaternium-91, Panthenol, Guar Hydroxypropyltrimonium Chloride, Amodimethicone, PPG-3 Benzyl Ether Myristate, Sodium Benzoate, PEG-120 Methyl Glucose Dioleate, Sodium Cocoyl Glutamate, C11-15 Pareth-7, Trisodium Ethylenediamine Disuccinate, Laureth-9, Glycerin, C12-13 Pareth-23, C12-13 Pareth-3, Polyquaternium-7, Dihydroxypropyl PEG-5 Linoleammonium Chloride, Trideceth-12, Linalool, Helianthus Annuus (Sunflower) Seed Oil, Hydrolyzed Vegetable Protein PG-Propyl Silanetriol, Sodium Ascorbyl Phosphate, Hydrolyzed Soy Protein, Macrocystis Pyrifera Extract, Ribes Grossularia Fruit Extract, Ribes Nigrum (Black Currant) Leaf Extract, Yogurt Extract, Arctium Lappa Root Extract, Avena Sativa (Oat) Kernel Extract, Camellia Sinensis Leaf Extract, Chondrus Crispus (Carrageenan) Extract, Cymbopogon Schoenanthus Extract, Euterpe Oleracea Fruit Extract, Garcinia Mangostana Peel Extract, Hibiscus Sabdariffa Flower Extract, Hydrastis Canadensis (Golden Seal) Root Extract, Ilex Paraguariensis Leaf Extract

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Most Helpful Customer Reviews

Giving it a try.

I liked the fact that it lathered up really well, but the smell bothered me. Still, it did seem to moisturize my hair so I might try it again.

4
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Bought this for my boyfriend

My boyfriend loved the shampoo, bought it for him. I love the smell but it was just so-so about how my long, processed hair felt afterwards

4
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Lovely Smell :)

This shampoo smells great and I love the way it lathers up. Makes my hair feel nice and clean!

4
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Great product!!!

This is a great product. I just got a hair cut recently and after using this product it was like I had just left the salon. My hair was soft,smooth and smells wonderful. I was able to air dry hair and not have frizz. Love it!! Can't wait to add it to my morning routine.

5
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Love

I love this brand and this shampoo thanks for Birchbox!

4
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Dried instead of Moisturizing

I did not like this shampoo - it seemed to dry my hair out more than moisturize it. Everyones hair is different - but for me it just didn't work

2
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Funny smell.

Maybe everyone's hair is different but this makes my hair smell like a lemon Clorox wipe. It isn't unpleasant I just prefer my hair to not smell like that. I like the concentration of it but can't get over the smell.

4
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Decent, but not Fantastic

The No 4 Hydrating Shampoo is a decent product, but didn't wow me. My hair felt clean after using it, but it has a strange/harsh smell that is hard to overlook.

3
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Scent too strong for me

I think the shampoo did a decent job of cleaning my hair, but the scent was way too strong for me.

3
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amazing!

I color my hair ALOT which leaves it dry sometimes and this stuff brings my hair back to life!!! Love it

5
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