How do you thin your hair at home without razors? And how do you get your hair super soft, shiny, and silky?

I know shaving your legs makes the hair really thick, so if I use a razor at home, won't it make it really thick on the top? Its summer so I also want it very shiny, soft, silky, and bouncy for summer. I also have a humidity issue. So help please! THANKS PEOPLE :D