Editor's TipEditor's Tip

After a good towel dry, get a long-lasting hold and finish with Number 4’s Firm Hold Gel.

Number 4 Hair Care

Birchbox Breakdown

Much like a dull conversation, dull hair should be avoided at all costs. This everyday shampoo (which does double duty as a body wash) deep cleanses and repairs damage while locking in much-needed moisture. The sleek pump dispenser adds instant style to your shower while ensuring you get as much or as little product as you need.

How it Works

Rich in vitamins and antioxidants, this clarifying shampoo restores health to all hair types. Black currant and soy add shine; acai berry and vitamin C deliver age-fighting antioxidants; Oolong tea and Irish moss defend against environmental damage; and lemongrass and oatmeal cleanse and purify.

How to Use

Apply one to two pumps of shampoo to wet hair and scalp. Lather, rinse, and repeat as needed. May also be used as an all-over body wash.

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 Men's Bonus Shop

Product Reviews & Sample Feedback

227 Reviews
3.9 out of 5 stars
5 Star
79
4 Star
85
3 Star
42
2 Star
13
1 Star
8
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Most Helpful Customer Reviews

Nice for occasional use
Sampled

A great shampoo to use the day after you've used dry shampoo and hairspray to really clarify and give you a clean feeling.

4
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Underwhelming
Sampled

The shampoo smells wonderful and I had high expectations. I like the feeling of a good lather and this shampoo does not have it. My hair didn't feel all that clean after use either. Will not be purchasing.

2
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Number 4
SampledPurchased

I love this shampoo. It locks in moisture so well that I don't feel like I need to add conditioner to my hair. It leaves my hair feeling soft and smelling great. The only negative is that it doesn't lather well. Other than that it, it does what it says it does. I would recommend this product.

4
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Very good product
Sampled

I took this product with me on an out of town trip. I thought my hair felt clean and healthy after using. I usually buy shampoo from the grocery store but this would be nice to have on hand.

5
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Great shampoo
Sampled

Smells great, lathers nicely, leaves hair clean and soft. My hair is fine and it gave me nice body without weighing it down. Helped with manageability.

4
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Not so much
Sampled

This clarifying shampoo made my hair pretty limp and I wasn't a huge fan of the scent.

1
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Felt Drying
Sampled

Living in a dry climate and having thin hair, this only dried out my hair and left it feeling crispy. Good thing I had some Beauty protect hair oil to apply afterwards. Will not use this again.

2
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Great Shampoo
SampledPurchased

If you have very thick, very curly or wavy hair that requires a lot of product to tame it (leave-in conditioner, oils, serums, etc.) this shampoo is fantastic because it really does leave your hair feeling brand-new and with no product buildup after using it, but still soft and shiny. I actually need less and fewer of the conditioning and smoothing products after using this shampoo.

I never thought I would spend $72 on a bottle of shampoo, but I've honestly never experienced such a perfect one- including at the salon. It's also actually not a bad value because, even if you do have tons and tons of hair like I do, they aren't kidding when they say that you only need a dime-sized amount to lather it up and wash through all of your hair.

5
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Average
Sampled

I really like that this product is vegan. It smells really good, but I did not notice my hair felt particularly clean after using it. My hair felt somewhat clean and a little dry. I think it's really hard to find a clarifying shampoo that actually works that is also vegan.

3
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Honestly, just okay
Sampled

This shampoo worked cleaned and softened my hair but I didn't think that it was absolutely wonderful to be honest. It only smelled okay and it dried my hair out a bit.

3
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