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 sulfate-free 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. The brand's four signature Liquid Complexes—blends of natural extracts—work to protect, strengthen, and purify strands without weighing them down.

How to Use

Dispense into hands and rub together to form a lather before massaging into wet hair. Lather and rinse, then 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

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Most Helpful Customer Reviews

Love the smell, a little goes a long way!

This smells divine- I'd like to find matching perfume! And while it seems expensive, I use a third of the amount that I usually use to get such a good lather. I think it does add volume, though it would have been nice to be able to sample the matching conditioner at the same time.

5
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Great Shampoo!!!

I'm not usually one to fall for a shampoo, but this one was so nice in so many ways. It had a nice thickness to it that made lathering up easy, the smell was great, and the overall effect on my hair was better than using my normal shampoo. This might be one to splurge on sometime in the future.

5
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great jfor my thin hair

I have really thin long hair. I need all the volume help I can get. I really liked this and felt it helped my hair have a little more oomph.

4
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Pleasant Shampoo

I've got thick curly hair and this shampoo didn't add to the frizziness which is always good. It left my hair feeling pretty smooth and it has a pleasant but subtle smell. Not sure I'm so in love with it that I feel the need to purchase but I'll keep it in mind.

4
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Its just a shampoo

I don't think this shampoo is anything to write home about. It says volumizing but It didn't do much for my fine straight hair. I did like the smell though. It didn't weigh my hair down so that's something I guess.

3
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nice stuff

I rather enjoyed this product and am happy it came in my birchbox. Great stuff!

5
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Truly works

This is a great shampoo. The scent was amazing and it gave my hair great volume. It also didn't strip my hair or make it feel greasy.

5
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No 4 Volumizing Shampoo

I have tried many volumizing shampoos, but this one finally lives up to its name! Has a great lather, is sulfate free, and really adds volume and texture to my hair.

5
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Nothing Exciting

I have to be honest- I didn't jump for joy when I saw I had received a shampoo sample. I feel like shampoo is the kind of thing you need to use a full bottle of before you can judge the effect on your hair. That being said, this shampoo smells nice and has a pleasant texture. I have long hair, so the small bottle only lasted two or three washes.

4
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It's okay

I was happy to see that it was sulfate-free because I have dry, curly hair but I found that it stripped my hair a bit and left it a little more tangled than usual. It cleaned my scalp fine, it just stripped my hair a bit too much.
Probably better for someone with straight or wavy hair

3
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