[This review was collected as part of a promotion.] I’ve used these products on and off for years! I always end up coming back because they just work wonders on my hair. Smells amazing and leaves your hair feeling fresh and clean!

I have fine hair and this really helped thicken and volumize my hair really well. The price point is not bad, though the bottle is a lot smaller than a typical shampoo. I used it in combination with a conditioner.

I love this shampoo. I feel like it makes hair really shiny and strong! I find that it’s good price and outperforms similar brands. I also love that it’s sulfate free so I can use it on my color treated hair.

"Simply the best -- better than all the rest!" Hmmm, did I hear that phrase in a song, somewhere??? Seriously, this is a truly wonderful product, especially if you have thin/fine hair.

I absolutely loved the Biotin Shampoo. It has a fantastic scent and the scent will last all day. It lathers extremely well. It’s just hard to find here. I am very satisfied with this product and I will buy again!

Made my hair feel so soft and lightweight. A little goes a long way. You only need a nickel size amount and it lathers on the hair perfectly. Good for any combination hair. Scalp feels fresh and hair feels lightweight and smells amazing

I just started using this product on my long fine hair. So far I haven't noticed any thickening, but there is less shedding when I detangle. I'm switching from Pantene to this brand.

I started to use this product because of all the great reviews I heard about it and they were true! This makes my hair feeling amazing! I am so impressed and I honestly love it so much. Would definitely purchase again!

After using this product I can honestly say that it is the best shampoo I have ever used!! The smell of it is just so good and it makes my hair feel so soft and not greasy at all!!!

Used this 3 times a week, gives volume and a structure to the hair. Avoid if you have too much frizz but otherwise very good for volume and structure to the hair. Can use it with OGX dry oil if you have too much frizz.