Editor's TipEditor's Tip

For best (ie: biggest) results, follow with Number 4 Volumizing Condition, which adds both body and shine.

Number 4 Hair Care

Birchbox Breakdown

This singular shampoo proves that style and substance aren't mutually exclusive. The sleek packaging and fresh scent are a nod to Parisian flair, while the scientific formula is designed to turn fine, flat strands into rich, full-bodied hair. (No strings attached.)

How it Works

This sulfate-free formula is designed to detangle and cleanse hair without weighing it down. It uses natural lemongrass, golden seal, and gooseberry, plus the brand’s four signature Liquid Complexes™. Each complex is a different blend of natural ingredients designed to help protect, purify, strengthen, and revitalize hair.

How to Use

Emulsify in hands and massage into wet hair. Lather. Rinse. Follow with Volumizing Condition.

More for You!
  • Free returns within 90 days of purchase
  • Extra samples and gifts in the Bonus Shop

Product Reviews & Sample Feedback

4,501 Reviews
3.8 out of 5 stars
5 Star
1446
4 Star
1582
3 Star
957
2 Star
265
1 Star
251
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Most Helpful Customer Reviews

Hair
Sampled

I did not find this product very good at cleaning nourishing and replenishing.

1
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Is it worth the price?
SampledPurchased

I honestly love this product. I bought the full sized version of the shampoo and conditioner and use it regularly. It smells great and does a great job adding volume to my hair, and it has been the only shampoo/conditioner that I can see noticeable results from it's use. My only question is whether it is worth the price tag. Sure it does a great and noticeable job, but could I buy a less expensive alternative and substitute the volumizing effects by the use of additional hair product?

4
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Not enough
Sampled

The samples were too small to use more than twice so I couldn't really tell if the shampoo was really volumizing

3
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it's okay; doesn't seem worth the premium
Sampled

smells good, works okay; nothing special though really. Could take or leave it. Won't be buying again. Was worth the try though.

3
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Good
Sampled

This shampoo was awesome made my hair soft and easier to manage

4
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Wow!!
Sampled

The smell of this is incredible!! Like a walk in a grove on a sunny spring afternoon! And thats not even the best part! The feel is... awesome! it has an extremely rich lather and a little goes a really long way. Excellent product! and if it wasn't so expensive I would be sold!!

5
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Wouldn't recommend for curly hair
Sampled

I have curly hair and did not notice a difference in the volume/lift after using this product. It may work better for those with thinner hair.

1
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Great!
Sampled

I love this brand and all its products. Lovely smell and super clean feeling. I don't need any more volumizing though... plenty of that on my own.

5
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Volume for sure!
Sampled

The shampoo cleaned really well and had a great scent. When used with the conditioner, it REALLY did give me noticeable volume. I received two shampoo and two conditioner samples and kept the second set for a special occasion when I needed a good hair day - and it did not disappoint!

5
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Not manly, but still nice.
Sampled

The smell is very light/relaxing, but kind of feminine. The feel is nice though. The only real downfall is the price.

3
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