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.

Liquid VibranceTM Complex (Black Currant, Soy Yogurt, Algae, Yerba Mate), Liquid VitalityTM Complex (Acai Berry, Hibiscus, Mangosteen, Vitamin C), Liquid DefenseTM Complex (Burdock Root, Oolong Tea, Irish Moss, Vegetable Protein), Liquid PurityTM Complex (Lemongrass, Gooseberry, Organic Oatmeal, Golden Seal)

More for You!
  • Product orders $50+ and all monthly box brands ship free
  • Free returns within 90 days of purchase
  • Extra samples and gifts in the Men's Bonus Shop

Product Reviews & Sample Feedback

2,785 Reviews
4.1 out of 5 stars
5 Star
1393
4 Star
984
3 Star
458
2 Star
148
1 Star
111
Hair type
Curly/wavy
Long
Straight
Afro-textured
Age
17 & under
18-24
25-34
35-44
45-54
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Most Helpful Customer Reviews

Number 4 is a 5!!
Purchased

This is the best clarifying shampoo I have ever tried. I love the fragrance and how clean it leaves your hair. You do not need to apply a lot. A little goes a long way. I truly believe the high price is accurate for all this product does. With each wash, you get a hair fresh start!

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Not a fan

I don't like the scent of this product - it reminds me of a hotel shampoo/conditioner. Also found the packaging to be quite bland.

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#4 shampoo

Great product, loved the scent. My hair felt clean and soft after use. Love that the product is vegan friendly and paraben free.

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sammie
Sampled

I like the way this makes my hair feel! The scent is nice also.

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Shampoo
Sampled

The shampoo was nice and my hair was really clean afterwards. It did feel like it dried it out some though.

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Wonderful but really
Sampled

I thought this shampoo worked great (after I dried my hair! The low lather or suds made me question if I got all of my thick hair cleaned.) But at this price I can't say my hair was THAT much better. I still had to use the same products afterwards.

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Love
Sampled

Love this shampoo. Plan on buying ASAP. The smell was great too!

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GREAT SCENT!
Sampled

This product smelt amazing as well as cleansed my hair without stripping it of moisture.

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Great smell, texture and foamy-ness
Sampled

I liked a lot about this shampoo, and *might* consider purchasing if it weren't SO expensive.

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<3
Sampled

I love that so much goes a long way in my thick hair.

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