My favorite hair care product I own! I use both the shampoo and conditioner and my hair has dramatically gotten stronger! I also have noticed it become more fuller too. I have been using this product for over a year and I don’t plan on ever stopping!

OGX Thick & Full Biotin & Collagen Shampoo & Conditioner are miracle workers! My hair is exceptionally thin and lifeless. I have tried so many products claiming to increase hair thickness that I have lost count, and none of them have worked. This product delivers! OGX contains vitamin B7 biotin to maintain growth and strengthen hair, collagen for healthy hair, and hydrolyzed wheat protein to pump up the volume. The scent is a wonderfully light vanilla and jasmine that really pleases the senses. I love that this product is paraben-free and sulfate-free! It keeps the good oils in, without disrupting the endocrine system. I was in a rush and decided to just do a quick shampoo without conditioner and I was pleasantly surprised at how soft, shiny, and detangled my hair was without conditioner. This product is a complete win!

[This review was collected as part of a promotion.] After finishing the whole bottle to give my review, I can say I really like this brand and wish i would have started using it sooner. The bottle seems small and the price seems higher than what it should, but it lasted me a long time and worked great on my hair that usually sits flat. This shampoo provided me a great amount of volume and also smells luxurious. I do feel that I had to use more during one wash but the overall works great leaving my hair smooth and voluminous. Will definitely be purchasing this!

I bought this product last night and used it for the first time. My hair has always been badly damaged from dying it and using a straightener. My hair feels like it has never been touched by any chemicals, heat, etc. I strongly recommend this product to anyone whose hair is basically fried and brittle!

The best of this shampoo it’s my hair shine. hair does not get fat quickly as with other shampoos. shampoo foams well, you need to use quite a bit, it is economical. for best results, use 2 times. I like this one [product:ogx-biotin-collagen-shampoo]

Wish i could say the same as everyone else.. i started using this to see if it would help make my hair grow an im regretting it!!! My hair has been falling by the globbs!!! Yes i do have hair falling out like all females but this is HORRIBLE my hair has never fell out like this before!! My hair is thin as is but this is the worst my hair has ever been!!!

Man, listen. I have tried tons of different shampoos and 99% of them left my hair feeling dry and brittle after using them, some of them were from other OGX lines. I got this in my monthly subscription box, CurlBox, and decided to give it a go. I was shocked when the shampoo lathered up on my scalp and didn't feel dry. It literally felt like a conditioner that lathered, it was that gentle and soft. The smell is incredible too! After washing the shampoo off I was sure that the softness was going to go with it, but it was still soft and smooth! No dryness, no brittleness! This has definitely become a staple in my regimen along with the Biotin & Collagen conditioner. For anyone who's curious I have thick coarse type 4 (with a little 3c but mostly 4a and 4b) natural hair.

I've been using this shampoo since January and my hair has never been healthier! My hair looks and feels thicker and it smells so fantastic! I use it as directed, shampooing the top half of my hair with the shampoo and leaving conditioner on the bottom half for 3 - 5 minutes. This products also removed a ton of product from my hair, I do pageants so it's not uncommon for me to have half a bottle of hair spray in my hair and this will get all of the product out in one wash. I alternate with this product, B5 shampoo (red bottle) and Vitamin E shampoo (yellow bottle) to ensure that my hair doesn't get used to any of the products and they have the maximum effect. I really don't know how I lived without this!

This smells soooooo amazing! The purple bottle with gold letters gives a luxury feel to the packaging. Unfortunately I had a bad reaction to this particular line which I’m very sad about because I love how it smells. My boyfriend uses it & has no reaction to it at all. So if you’re like me & have sensitive skin, I’d avoid this. If not, it’s great. My hair smelled amazing for days after using & made my hair look very healthy.

I bought this about 2 months ago and it does do what it says, my hair has grown significantly since using this product and it makes my hair appear thicker, the only problem I have with this product is the smell. I'm switching to a different one with the same brand to try to get the same effect just with a better scent. I love OGX!