Tampons
You get these gross things in your hair-down-there called crabs. And you smell really gross and people won't be attracted to you.
they keep clean by making their own soap by themselfs.....
Soap and water and a strong deodorant.
Bleach
Certainly they cleaned during World War 2. It was a never ending battle to keep clean. They did not get to clean during battles. After the bombings they had to clean up themselves and the environment. If people do not keep themselves or their environment clean they can get severly sick. The English women struggled to keep things clean.
Just wash around it normally. Do NOT try to clean under the foreskin of a baby or indeed any boy. When a teenage boy reaches puberty then is the time to instruct him how to keep it clean.
keep him clean washing, breaching
You have to be confident about your self. You have to remember that these changes are for the good and keep a positive attitude.
You need to keep clean during a food laboratory activity because you can contaminate the experiment and skew the results. This is the main reason although you may just like to be clean.
Mostly during puberty, because the sebaceous glands in your skin go into overdrive. It can happen to anyone, though. To avoid this, keep your skin clear, eat healthy, and when you feel stressed, take some time to relax each day. :)
The best way to keep clean during a menstrual cycle is to wash your genital region twice a day with warm water. Also you should use a mild soap.
It triggers the puberty process and helps keep the hormone levels correct.