Editor's TipEditor's Tip

For soft, healthy locks pair with Number 4’s Lumiere d'hiver Reconstructing Masque. The rich conditioner adds a serious dose of moisture to dry strands.

Number 4 Hair Care

Birchbox Breakdown

At the end of a long day we could all use a fresh start—the same goes for our hair. When product buildup and styling stress leave your locks feeling dull, use Number 4 Clarifying Shampoo, subtly scented with white freesia, golden amber, and warm musk, to gently cleanse without stripping moisture or color.

How it Works

Rich in vitamins and antioxidants, this clarifying shampoo restores health and shine to overworked tresses. Black currant and soy restore vibrancy; acai berry and vitamin C deliver youth-boosting antioxidants; Oolong tea and Irish moss defend against environmental damage; and lemongrass and oatmeal gently cleanse and purify. This shampoo is also vegan friendly and free from sulfate/sodium chloride and parabens.

How to Use

Squeeze a small amount (a little goes a long way) of the water-activated formula into the palm of your hand and work into a thick lather. Deposit the lather evenly through damp strands and rinse thoroughly. Use daily for best results.

Water, Decyl Glucoside, Disodium Cocoyl Glutamate, PEG-120 Methyl Glucose Dioleate, Fragrance, Polysorbate 20, Sodium Cocoyl Glutamate, Gluconolactone, Polyquaternium-10, Sodium Benzoate, Benzyl Salicylate, Butylphenyl Methylpropional, Linalool, Hydroxyisohexyl 3-Cyclohexene Carboxaldehyde, Helianthus Annuus (Sunflower) Seed Oil, Glycerin, 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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Most Helpful Customer Reviews

not my style
Sampled

This did nothing for my hair except make it smell funky and made it look frizzy afterwards. I wouldn't buy this product, sorry. I ended up washing my hair again afterwards, just to get the smell out.

1
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Great Smell
Sampled

I love how this shampoo smells. My hair feels clean without feeling stripped. Great Product!

5
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Yummy
Sampled

This shampoo had a wonderful smell and worked well to remove product buildup. I have curly hair so product is a must for me everyday but can leave my hair feeling dry and filled with residue. This worked well to remove the product and leave my hair soft and voluminous

5
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My new favorite shampoo.
Sampled

I only need to wash my dry, thick, platinum blonde hair once a week and this clarifying shampoo is perfect for that. I never thought I would find a shampoo better than the high-end salon brand I've been using for the better part of a decade, but after trying this one I'm switching immediately. I love the way that it gets rid of any excess oil and styling product buildup without completely stripping the moisture and life out of my strands. Basically, it gets the job done without being too harsh. It leaves my hair clean, soft, shiny, and as manageable as my difficult hair gets. Haha. Oh, and the scent is great, really natural and fresh. I'm so obsessed and I have a feeling I'll be using this product for many years to come.

5
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Very nice
Sampled

This made my hair feel so clean, soft and light! I use quite a bit of product in my hair, so my head appreciated this! Smells great too.

4
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Love this Brand
Sampled

I've purchased this brand for myself at friends. It's impossible to find in my little mountain town. I've purchased and will continue purchasing from Birchbox. The smell is divine!

5
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Not Impressed
Sampled

I've used this shampoo several times and am not impressed. The first time I used it and dried my hair after it felt dry and stringy. I had the same issue the second time and my hair felt greasy. I wouldn't recommend it.

2
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I really wanted to like this
Sampled

Perhaps this just didn't work for my hair type? I have fairly fine hair that can get oily easily. The shampoo was almost pointless, it looked like day 2 or 3 of not washing my hair, super oily and not cute. I had to use dry shampoo on my lunch break to make my hair look decent after using this. High hopes with a letdown.

2
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Merlin's Beard!
Sampled

I used this product in an attempt to clean my hair and get rid of the grease, in order to get Lily to like me again, but this went terribly wrong. This shampoo did the opposite of de-greasing. In fact, my hair was so greasy the next day that I left grease marks all over my OWL exams! Potter and Black tormented me about it all day. Now Lily hates me more than ever, (though that could be because I called her a mudblood. Sorry Lily!). Overall, 1/10.

2
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not my favorite
Sampled

I felt this was kind of hard to use which I think is an odd thing to say about shampoo. But it was not easy to get out and I felt I had to get more because it just didn't feel like the first amount was doing anything.

3
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