Instruct: Classify the given review as either positive or negative.
Query: Useless

Maybe I haven't given this product enough time to work, but it's been a few weeks now and I can't stand to use it any longer. It doesn't lather, it definitely doesn't keep me from needing to use conditioner, as some people have claimed. It doesn't smell horrible, but it doesn't smell good. My hair just feels weird after I use it, like it's lifeless. If you don't use enough, it doesn't distribute well, and if you use any extra, your hair feels greasy afterward, like it doesn't want to rinse out. Definitely no thickening effect that I can see. I do have very fine hair. I just received a few samples of Redken IntraForce shampoo and toner for thinning color-treated hair. I have only used it on and off about 5 times now, and as soon as I blowdry my hair, I can actually feel that my hair just feels thicker, above the nape of my neck. I will probably buy some bottles of that soon. But this Biotin stuff is a waste of money!