Editor's TipEditor's Tip

For the ultimate nourishment, treat your hair daily to Number 4™ Fluoro5 Elixer Restore & Repair Oil.

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

Number 4™ 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. Apply one pump to wet strands and work into a lather. Rinse thoroughly, and follow with 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

140 Reviews
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Most Helpful Customer Reviews

Great product

This shampoo leaves hair feeling very smooth and smelling great. I wash my hair every other day, and the second day was better than the first! Definitely worth the cost.

4
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Great shampoo!

The texture is nice. The lather is amazing. Not truly sure if it's doing it's job in hydrating my hair, but my hair definitely feels clean after a good scrubbing with product. The only thing holding me back on purchasing this would be the price. Can't really justify spending $70 on shampoo or conditioner.

4
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This shampoo ROCKS the house!

I LOVED this shampoo. I want to buy it when my sample is done but it is WAY too expensive for me. :( Maybe I could get more "sample" sizes ?

5
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Hydrating Shampoo

Did not like this product. Smells like an old person and made my hair too soft to do anything to.

2
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Hair feels great!

This shampoo smells great and makes my hair feel really Soft. I have color treated hair so I have a lot of fly aways and I do feel like this minimized that a bit. I plan on purchasing this!

4
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Smells Amazing

The smell of this shampoo lingered for a few days which I didn't mind. I didn't like the thickness of the liquid was hard to tell how much is enough. I ended up using too much. It is Hydrating along with the Spray that number 4 makes.

3
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freash

Love this shampoo. It is a fresh smell and doesn't strip your hair of essential oils. Healthy shampoo that leaves your hair telling you thank you!

5
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Smells amazing

If I had the kind of money to indulge in a shampoo this would be the one. It smells great, it's light, and being sulfate free really counts when you have dry hair like I do. Love it!

5
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smells great

A little bit on the pricier side but i really enjoyed the smell of the shampoo and conditioner. It left my hair feeling soft and is safe on treated hair.

4
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Not so good for fine hair

My hair is fine, thick but fine. It weighed down my hair too much for my liking. The shampoo smelled amazing though.

3
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