Number 4™ Volumizing Shampoo - 8.5 oz

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.

Number 4™ Volumizing Shampoo - 8.5 oz
3.8 out of 5 stars, based on 4,731 Reviews 4,731 Reviews
3.8 out of 5 stars
5 Star
1519
4 Star
1680
3 Star
999
2 Star
276
1 Star
257
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A rare gem

I have very long hair, needed about the size of a quarter and it lathered very well. I was impressed with how much volume it really added. Love it very rare to find a product that actually adds volume and hair is noticeably different

5
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Smells nice, good lather

I like that it's sulfate free. It lathered up nicely and had a light pleasant scent. My hair felt healthy after using it. Not sure it added a ton of volume though.

4
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Just another shampoo

This shampoo had a great smell and left my hair soft. I didn't see any different in volume. However, I am very low maintance with my hair, so it's hard for me to see a huge difference. I enjoyed the sample however I am still partial to my redken

4
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Great Product

Great lather, a little goes a long way. I did feel that my very limp hair had more body after using this shampoo. This brand never disappoints!!

5
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Loved!

Number 4 can do no wrong. This shampoo smells great, makes my hair feel squeaky clean and gives it volume without being weighed down.

5
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Smells so good

I love the scent of this shampoo, but I already have really thick hair so I definitely don't need to use a volumizing shampoo regularly.

4
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Amazing, as usual

I have received three products from this line and I'm absolutely hooked. They smell wonderful and my hair feels soft and fresh after each use. The best part is that they're 100% vegan with no sulfates or parabens. I can't wait to try the rest of the line!

5
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Smells good

Nice shampoo that smells great. Does add volume but nothing special compared to similar products.

4
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No difference

Great shampoo but I am not sure that I would spend that much money for a product that did not make a difference. Since my hair is curly I did not notice anything... maybe it would work better for straight hair.

4
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Life hair troubles

I have fine layered hair that needs help with its lift. I've been searching for the right products to help and this shampoo is a great addition to the other products I use.

5
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