I want to give an honest assessment because I know how hair loss affects each of us. I've been losing my hair since I was 20 and have done everything under the sun to fight it off. I've reached a point in my life, after some surgeries, where I've got about 30-40 percent density over the entire top of my head and a little less in the back. I have run out of donor hair and was stuck with either having to wear a hair system or use a masking product. When I first started using this I was prepared to give it a lower rating. It didn't seem to apply evenly and ran very easily with a little sweat or water. After applying it a dozen times it got easier and was more effective so don't necessarily give up after the first couple of tries.