I have two purple ones. I like them. I don't know if my hair is growing from the cap or if it's from just taking really good care of my hair. I don't have as much shedding when I wear my caps. You are supposed to only wear them for about a month or so...if I remember correctly. And you are not supposed to get it wet. But I like it. and I plan to keep wearing them to protect my hair at night. It can become a bit costly...so I just keep on using it to tie my hair up. It's cool though...I have no complaints. HTH.