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

More for You!
  • Free returns within 90 days of purchase
  • Extra samples and gifts in the Bonus Shop

Product Reviews & Sample Feedback

5,280 Reviews
4.0 out of 5 stars
5 Star
1982
4 Star
1901
3 Star
1007
2 Star
257
1 Star
133
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
Hydrating, but oily residue

Too heavy of a conditioner for short hair. Oily even after thorough rinse.

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

Easy to work into a lather, smells good. I wish it had been paired with the conditioner to try at the same time

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

Because I only got a few used out of the sample, I couldn't really tell if it made much of a difference, but the fragrance was like I just walked out of the salon!

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

Love the smell of this shampoo. Very clean smelling. It lathers wonderfully and is gentle on my hair coloring.

5
Was this review helpful to you? Yes | No   Was this review helpful to you? Yes | No
This is amazing!!

I was recently on vacation in the Dominican and between the sun, swimming in chlorine and the ocean, I used this one my hair everyday and it really helped to keep my hair from drying out and feeling stringy. I'll definitely be purchasing the full size of this.

5
Was this review helpful to you? Yes | No   Was this review helpful to you? Yes | No
Quality product but not for fine thin hair

Great brand but this shampoo didn't do much for my fine, thin hair. I'm sure it would work well for someone else.

3
Was this review helpful to you? Yes | No   Was this review helpful to you? Yes | No
Good Product

The shampoo made my hair feel very clean and I loved the shine I had.

4
Was this review helpful to you? Yes | No   Was this review helpful to you? Yes | No
More like clarifying shampoo

I really enjoyed the smell of this product and it worked well in terms of cleaning my hair. I have very dry and brittle hair and after using it my hair did not feel soft like I expected. For me this shampoo worked more like a clarifying shampoo than a hydrating shampoo and I could definitely not use it without conditioning.

3
Was this review helpful to you? Yes | No   Was this review helpful to you? Yes | No
Eh

Not very good. I felt like I couldn't get it out of my hair. It just... stayed there. Really gross feeling.

2
Was this review helpful to you? Yes | No   Was this review helpful to you? Yes | No