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.

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 Bonus Shop

Product Reviews & Sample Feedback

4.1 out of 5 stars, based on 2,785 reviews 2,785 Reviews
4.1 out of 5 stars
5 Star
1309
4 Star
894
3 Star
423
2 Star
137
1 Star
103
Hair type
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Age
17 & under
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Most Helpful Customer Reviews

Awesome

This shampoo is fabulous. It has amazing thick texture, smell, and results! Cannot believe how clean my hair felt after using it. It only takes a small amount too!

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Hair
Sampled

This made me hair feel super soft i really liked it

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Doesn't Lather
Sampled

Its hard to say if this shampoo was very effective however I like a lot of lather so that I can "feel" my hair getting clean. This product has a low-lather that just doesn't hit the mark for me.

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Smooth!
Sampled

I liked a texture, smell, and loved how this made my hair so smooth.

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Worked Well
Sampled

Worked well left my hair feeling lighter. Would buy this product.

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Ehhh
Sampled

This shampoo is no for me. Clarifying shampoos always seem to dry out my hair and this one was no exception.

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Love the smell
Sampled

The smell of this shampoo is one of my favorite parts about it. Not only does it smell fantastic, but it really makes my hair feel and look a lot smoother and softer.

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Interesting Texture, but didn't see results
Sampled

Maybe it's because I don't use a lot of excess products on my hair, but I didn't notice a huge difference in my hair after using this product. The texture was extremely thick, like honey, but pretty easily lathered up into my hair. I loved the scent of this product!

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Meg
Sampled

Almost felt like it dried out my hair. SMells nice though!

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Clarifying shampoo
Sampled

This product was nice. I have a hard time judging shampoo because we only get about one of two uses out of the samples but I liked the scent

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