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

Great simple shampoo

This shampoo is great for people who like a simple scent. Personally I like more of a scent, but it's a great formula. I would recommend this product to anyone who likes shampoo that isn't too strong!

4
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My hair loves this stuff!
Sampled

Absolutely love this shampoo and how clean my hair feels after using it. Not harsh or heavy. It washes out the hair products and daily pollutants without washing out my color. And the scent is amazing!

5
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Maybe for shorter hair?
Sampled

The immediate result of this shampoo was noticeable right after I blow dried my hair. However within a couple of hours my long and thick hair was back to it's normal flatness, even with a root lifter. I think this shampoo would work really well for someone with shorter and perhaps thinner hair.

4
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Good quality shampoo
Sampled

I really like this shampoo! It smells great and it truly gets my hair clean without over-drying or over-moisturizing. I've also tried the conditioner and enjoy how they work together.

4
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disappointed
Purchased

I think this product just doesn't work for my hair - which is very thick and a lot of it. Watery consistency that was hard to lather into my hair and didn't seem very effective in hydrating. I expected better results for the price.

2
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A nice change
Sampled

I like changing shampoos from time to time especially as we transition from one season to the next. I like using this shampoo when I want to blow dry my hair and curl it as oppose to wearing it naturally. The hair looked camera ready. I was ready for my close up.

4
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Love it!

Listen I live in south, the humidity struggle is real. This stuff works!

5
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Smells wonderful, Not volumizing
Sampled

The shampoo smelled wonderful which made for a nice refreshing shower. The shampoo left my hair smelling great, but did not create any special volume that I could notice. It's nice but I wouldn't spend any extra money for it!

3
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OKAY
Sampled

Overall this shampoo did the job but I didn't really find anything to be really great about it. I think this may have been due to the smaller sample size and the fact that over time the sulfate free aspect sets in (I have a lot of hair I only got like 2-3 washes out of it).

3
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Meh
Sampled

I didn't really notice a difference, but that might be because my hair is so long and thick. I really like the smell

2
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