I was so surprised what a difference this made for my hair! I have long straight hair and not a lot of it. I had been struggling with losing several strands every time I washed my hair, and just felt it was getting thinner by the day. I have been using this for about 2 months now, and the difference is amazing! No more fallout, and my new wet brush also has helped A TON. I have more volume and my hair is getting healthier. Very promising. I'd recommend it!

This shampoo does the whole opposite of what it claims to do. My daughter had very thick hair and ever since she started to use this shampoo, her hair has gotten so thin and breaks so much easier. My husband, son and myself noticed that as well, but my daughter was the most affected by it.

I have been using the OGX Biotin & Collagen Shampoo for a few weeks and the results are amazing. The texture is thick and luxurious, and it creates a rich lather that leaves my hair feeling super clean. Since I started using it with a regular frequency, I've noticed my hair looks much fuller and has a healthy shine. It really delivers on its promise of adding volume without weighing it down

​"I am absolutely loving the OGX Biotin & Collagen Shampoo! It really lives up to its 'Thick & Full' name. After just a few uses, my hair feels much more voluminous and has a noticeable bounce. It's perfect for adding body to fine hair without making it feel stiff or dry."

This product, along with the conditioner is my absolute go to for my hair extensions. It keeps them feeling soft and moisturized. No stiffness, dryness or itchiness. Just light flowing hair. The scent is subtle but gorgeous too! It lathers really well and easy to dispense; a little goes a long way.

A little backstory…I have really fine hair that is starting to thin around my hairline and has no volume unless I curl or back comb it. I'm really picky with hair products because of that plus I color my hair. I'm not joking when I say this, but I noticed a difference after the first time I used this. My hair had volume that actually lasted. I had lift at the roots and I noticed even more volume when I curled my hair. It didn't mess with my coloring either and has a nice scent. The second time I used it, I still had great results.

The OGX Thick & Full + Biotin & Collagen Volumizing shampoo works wonderfully! It leaves my hair feeling thicker, fuller, and healthier without weighing it down. After just a few uses, my hair looked more voluminous and had great bounce. It smells amazing, lathers well, and rinses clean without leaving residue. Perfect for fine or flat hair, and a little goes a long way. I'm very happy with the results— I will never use anything else!

Love this shampoo. One of my best I have used sofar! It feels lightweight but still gives my hair real softness. It cleans without irritation, and I've noticed less frizz and way less limpness on my fine strands. It leaves my hair fresh, fuller, and smooth without weighing anything down.

I have dry overprocessed hair because of bleaching, and am in my 50s. Not many products do what they say, but after using this shampoo, my hair is always silky soft. I love it! My hair is also curly so frizz is always an issue... But not with this shampoo. So if you have the same problems I do, then I encourage you to try it. You won't be disappointed!

I have used OGX products for many years. They have a great variety and affordable. I like this particular option as it adds shine and softens to my hair. However, it could be a little heavy for some so switching up your hair care every so often helps with that.