I was super excited about this product when I read about it. I ordered it on Amazon for about 10 dollars, which seemed like a great deal considering there are new prescription products available for 20 times that price.
Unfortunately, after about 4 months of regular use I haven't noticed much of a change. My lashes are softer, but otherwise that's the only difference. I had purchased it mostly for use on my brows (very thin and sparse) but I haven't noticed any change at all with them.
The product is sticky, and dries stiffly, which works if you plan to use it for a brow taming gel or a clear mascara but, when it dries you can feel it tightening. I only apply it before bed for this reason.
After reading so many positive reviews I had high hopes for this product, and I will continue to use it until the whole tube is gone (maybe another week or two), but I won't be buying it again.