My hair are baby fine, lack volume and are super dry. When I first heard about this product I was really thrilled to see something that i made for fine hair. The active ingredient for this range is Filloxane, which works from the inside to increase the thickness of your hair wash after wash. I have been using it for over a month now and can clearly see the difference in my hair. They have a lot more volume and can hold style for long time. The smell of this this products is also great and stays for a longer time. The shampoo+conditioner do not tend to make hair dry and keep your hair well moisturized. I totally love this product!
One thing that you need to be keep in mind is booster is the key part if you want to achieve thicker hair!

Smell soooooooo good! This product makes my hair looks very good and I recommand this product for sure. thanks again.

My hair finally has volume . Thank you lol

I really wanted to love this product, but I really do not. I gave it a fair try to see if over time it actually works as claimed. I did like the shampoo scent. The shampoo lathered up nicely. The conditional also has a lovely scent. I did use the booster as recommended, and did see results on the first application. My hair was poofy and out of control. This happened only the first time. With consistent use, I have noted that my hair is more dry than it normally would be. I have had to compensate with a hair mask and revert back to my old standby to get my hair to shine again. I have used other L'Oreal products with great success, and will continue to use the other products in the future - I will however be giving the Fibralogy a pass.

I did receive this product as a sample to try for free.

As someone who had very thick hair until my late 30's, I know what thick hair feels and looks like....
I have used all 3 products in the Fibralogy line for 3 weeks now. Honestly, I can't say I have noticed any difference in the feeling of thickness in my hair. When trying the ponytail test, there is no difference....it's as thin as ever.
The conditioner completely melts into your hair. It's very hard to tell it's there, and really doesn't condition at all. My hair is tangled immediately when rinsing it out.
I feel a bit slighted by this new product. I mean, the claims are pretty mighty, but the results, not so much. I also feel a little gullible that I actually thought a shampoo, conditioner and 'booster' could actually thicken my hair, or provide the illusion of thicker hair.
My advice, spend your money on a good pH balanced product.....you won't find anything beneficial about Fibralogy except maybe, the fragrance.

I got it to review as a freebie. I don't care for the smell. It smells like I keep dying my hair. Also, I feel like it has made my hair really dry and frizzy. I like the idea of the booster, but the tube is too small for the amount they want you to use twice a week. Really disappointed. :-(

This stuff is amazing! The product advises that it takes using it at least 5 times to see a difference and I agree but once it starts working? wow! My hair has been so much fuller and thicker since using this product!

This stuff is my favourite. My hair is SO thin, when I wear it down it has no volume and when I wear it up I look bald in spots. I have really noticed a difference using this line, my hair looks a lot thicker and I can feel more density to it. I haven't used it for a long time, but I will update. So far, it's working pretty well!

I love the product smell! Scent is airy, elegant and definitely not overpowering like a lot of hair care product can be. Shampoo is more or less much like the other ones I've used before, texture and application didn't seem to be much different. Thickening booster was more liquidy than I thought it would be, I felt a need to use more than suggested dime size, because it just wouldn't cover my hair otherwise. It could be length of my hair or just very runny texture. Conditioner on the other hand was thicker that I was expecting it to be, almost like a cream or mask. I really liked that. It was very easy to apply it and I needed just a little bit of product to work it through my hair. Easy to wash out. After use it almost felt like my hair is covered with silky layer. Loved it! I've been using product now for little over a week, still very early in the process, but I do honestly think it's working and has effect on my hair, unless I'm experiencing Placebo effect :) Don't get me wrong, I'm no lioness, not hair wise anyways, but I see little more volume, that probably is a result of thicker hair. And I'm loving it!