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.

How it Works

L’eau de Mer™ uses vitamin B5 to condition hair and silicone to bump up the gloss factor, plus the brand’s patented Liquid Complexes™. Each of the four complexes is a different blend of natural ingredients, designed to 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 L’eau de Mer 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

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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648
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634
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331
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Most Helpful Customer Reviews

Loved the scent
Sampled

Left my hair feeling soft. I loved the smell. I w ill deifnitely buy it and use it as my special shampoo.

3
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Nice stuff.

I liked this sample, particularly because it didn't have any strong smells. It just cleaned my hair and didn't leave me smelling like a flower shop.

5
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Great product!

I've mainly used drug store shampoos the past few years, but No 4 has definitely changed my mind. It makes my hair softer and more manageable than any shampoo I've used.

5
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Smells a little odd for my taste.

This shampoo does the job, but doesn't really stand out as a better product than most. For something as basic as shampoo, I think the price is high. The scent isn't necessarily off-putting, but it's also not something that I'm in love with. It has a bit of a musk like smell. I'm more into citrus and light summer floral kinds of scents.

3
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Love

This shampoo is amazing. My hair feels incredible after using it. The way is smells is very nice as well.

5
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Good shampoo

Good product and does what it says. I liked the way it made my hair feel overall.

4
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Good not great
Sampled

I have very thick hair so it was hydrating but it left a residue in my hair. It smells great though.

3
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Nice

Nice product but I use another hair care product from Birchbox, will be sticking with that one.

4
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best shampoo ever!

I have tried so many shampoos but this by far the best one I have ever used. The smell is also great.

5
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Good shampoo, but a little pricey.

See title. I don't tend to buy expensive shampoos and conditioners but if you have the expendable income, I'd recommend it, as it is still a good product.

4
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