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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.
I absolutely loved this shampoo! It felt just like the shampoo that they use when you get a super fancy haircut. Also, didn't weigh my hair down at all. Nice neutral scent too. However, there's no way I'd pay that much for a full bottle of this.5
Left my hair shiny and feeling fuller. Don't think I'll need to use it much, b/c I have fairly thick hair, but it didn't result in any frizz. Recommended if you're looking for a bit of a boost!5
I love all the Number 4 products!!! They make my hair smell amazing all day!!!! I will buy the pack of them!5
this is one of the first Shampoo's I have tried that gets all of the grease out of my hair without stripping all of the shine and "life" out of it.5
Best smelling shampoo I've used. Fresh scent and cleans without residue. Love it!5
In love with the smell! Leaves my hair full and soft and smelling so sweet and clean! I love all no.4 products!5
Great smell and works well. I like that it doesn't weigh my hair down.
I would recommend this product to my friends definitely!
This is the third shampoo I have received from Number 4 and I have loved them all! This shampoo does what it says it will. It gave me great volume and softness! Keep sending these samples my way Birchbox!!!5
I really love this stuff!!! Wish the sample was a little bigger but it's great! I will definitely try the other products in the future!5
I love this shampoo, it's not heavy, so my hair naturally waves and looks like I spent a lot of time on it. I will be buying this product as soon as I get done with his review!5