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 Men's Bonus Shop

Product Reviews & Sample Feedback

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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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works well
Sampled

My hair has been really dry lately and this product has done a good job of helping with the moisture level. I don't love the scent but it isn't too distracting.

4
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Needed the Hydration

I have been styling my hair more than normal and am always looking for products that I can use once every couple of days to add a boost to the health of my hair. I thought this shampoo did a good job of doing that.

4
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Decent shampoo

At first, I didn't catch on to a scent until lathering up in the shower. The scent was okay, but not one I personally liked.

4
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Mega Lather

You only need a very small amount. It lathers up very nicely. My head felt like a giant suds ball.

Not a huge fan of the scent. It's a little too masculine for my taste.

Left my hair feeling soft.

4
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Hydrating and smell good

I use a ton of conditioner but only wash my hair about twice a week, so I found this hydrating and smells good but not sure it did a lot more than my already used conditioner.

4
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Good, not great

I have purchased other Number 4 products and love them! This shampoo was just okay. Didn't smell as nice as some other products and I didn't notice a huge difference in my hair. I'll stick with my Number 4 Volumizing shampoo & conditioner!

4
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Tried a few times

I've received a few of these in my boxes. It's ok, not horrible, however not worth the price IMO.

4
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Great Product!

Love this product! Can't wait to purchase it when I run out of my current shampoo!

4
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Smelled bad

I rarely don't like something from my Birchbox. I thought it smelled bad and left my hair feeling frizzy and coated. The sample size was nice, though.

1
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