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

  • 4.0 out of 5 stars, based on 6,067 Reviews 6,067 Reviews Write a Review
  • $34.00 includes Free Shipping
  • 8.5 oz   
  • Availability: In stock

    $34.00

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

More for You!

Product Reviews & Sample Feedback

6,067 Reviews
4.0 out of 5 stars
5 Star
2228
4 Star
2198
3 Star
1175
2 Star
314
1 Star
152
my profile
people who
purchased
sampled
Hair type
Thick
Fine
Straight
Wavy
Curly
Frizzy
Kinky
Dry
Normal
Oily
Hair color
Brown
Blonde
Black
White or gray
Red
Other
Age
17 & under
18-24
25-34
35-44
45-54
55 & over
Apply

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
Was this review helpful to you? Yes | No 3 of 3 found this review helpful. Was this review helpful to you? Yes | No
Nice Shampoo -- not oily or greasy!
Sampled

A lot of hydrating shampoos leave your hair at the other extreme of feeling oily or greasy without actually helping nourish your hair. No.4 L'eau de Mare Hydrating Shampoo finds the nice balance in the middle -- my hair feels much more hydrated, yet not oily or greasy!

4
Was this review helpful to you? Yes | No   Was this review helpful to you? Yes | No
Good

This product is good would recommend for daily use. Smells good also. If you have dry skin this works wonders

4
Was this review helpful to you? Yes | No   Was this review helpful to you? Yes | No
Squeaky Clean
Sampled

You can really feel this shampoo working. After use my hair felt clean and like all the impurities were removed. I didn't love the scent though. My hair is very fine so definitely needed a very moisturizing conditioner after using this.

4
Was this review helpful to you? Yes | No   Was this review helpful to you? Yes | No
Shampoo for everyday use
Sampled

This shampoo and the conditioner are great for after workout use. The scent isn't overpowering and smells fresh. If you are looking for a shampoo that won't dry your hair out, this is perfect.

4
Was this review helpful to you? Yes | No   Was this review helpful to you? Yes | No
Excellent Product, Slightly Overwhelming Scent
Sampled

I loved the product, I felt that it performed as described. It gave great volume while still moisturizing.

I liked the smell, but it was definitely a bit overpowering.

4
Was this review helpful to you? Yes | No   Was this review helpful to you? Yes | No
Just OK
Sampled

I didn't really notice any improvement in my hair after using this. I have really think hair, so I only wash it two to three times a week, so maybe that's why it didn't stand out. I don't think I would invest in this..I have spent more money on Moroccan or Kerastase shampoo which I did feel a noticeable difference.

2
Was this review helpful to you? Yes | No   Was this review helpful to you? Yes | No
Nice shampoo
Sampled

I have long, thick hair and I normally use several pumps of shampoo to get a good lather. With this shampoo I didn't need to use as much. The smell reminds me of the shampoo at salons, which I like.

4
Was this review helpful to you? Yes | No   Was this review helpful to you? Yes | No
Fine
Sampled

It lathered up really well for a hydrating product and rinsed clean, which is good since I have a tendancy to turn greasy fast. But the smell is just so strong. It may be sandalwood? Or something? It's pretty sultry, but just so strong. By the time I finish the sample I think I'll be over the scent and won't buy for that reason.

3
Was this review helpful to you? Yes | No   Was this review helpful to you? Yes | No
Leaves hair smooth
Sampled

This shampoo does not leave my hair dry and fizzy, it is smooth and combs thru easily; stays so for several days.

4
Was this review helpful to you? Yes | No   Was this review helpful to you? Yes | No