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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Good!

This shampoo smells great- and feels silky soft. The shampoo worked great !

4
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smells nice, made hair very soft
Sampled

I enjoyed the smell. I have curly short hair and didn't really need conditioner with this shampoo. Very nice overall.

5
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loved it
Sampled

I loved this shampoo. It worked great, smelled great and made my hair feel amazing! I would buy it for sure.

4
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good for dry/color damaged hair
Sampled

this shampoo is suer moisturizing but not to heavy.i have super processed hair and i felt it really softened my ends and added shine without weighing down my hair. i love that it is parben/sulfate free and it foams up quickly so a little goes a long way!

4
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loved it!
Sampled

My hair us super fine and this did not weigh my hair down any further. Not only did it add volume but my hair was very silky.

5
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Very Moisturizing!

Love this! My hair is very dry so it really helped with that! Thinking of gettin the full size!

5
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Not for me
Sampled

I already have a shampoo I love and this one just wasn't for me. It didn't leave my hair feeling as good.

1
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love this shampoo
Sampled

Finally a high quality shampoo that is gentle on my hair, but doesn't leave buildup. And doesn't cost a fortune. And smells fabulous--but doesn't perfume your hair so much that you cant wear perfume.

5
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Number 4 Hydrating Shampoo
Sampled

I love this shampoo. I color my hair a lot and this make is feel soft and manageable. I kept my sample in my gym bag!

4
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