I have EXTREMELY thin hair. I was talking to someone at a salon, she says she does custom clip ins. They will be dyed to match my natural hair color and fitted to my head. It is only 1 band, not like a cap. She said they will look very natural and be the same length as my hair. They will just add normal looking thickness. They are human hair and it would cost about $150. The problems i have are: -How often will i have to replace them? -Will they come off during P.E.? -Will people notice they are fake? I would wear them probably 5 times a week. I'm in high school by the way!