I have to replace my topper about every four months because it thins. With my current one, I have been trying to wash it only 2 times per week but even then when I brush it in the morning, tons of hair come out of it. I am not sure why this is happening but its a problem because the topper that is supposed to last 6 months needs to be replaced sooner costing me more $$$$. Has anyone had this problem? Any suggestions? Thanks!