gexworldwideGEX Beauty Flexible Velvet Wig Grip Wig Band Scarf Head Hair Band Adjustable Fastern

will this still work if i have hair underneath my wig? (I only have a partial wig)

Cause loss of hair?

I have a sensitive hairline, will this product help to protect it?

I bought one of these and after the first few days it was very stretched out and now way too long! Anyone else have this problem? Washing it no help!