Most people put it on once in the morning after bathing and again before going out for the evening. Since most deodorants contain aluminum oxide, it's a good idea not to use too much. Everyone should have a trusted friend to let them know if the deodorant is working.
I think that an average person should put on deodorant at least 1 time a day. I personally put it on 2 times a day.
On your underarm
you did not put on deodorant or you did not put on enough.
You smell better!
Depends if you sweat a lot for Sports probably 5-6
you should at least 2 times a week good luck :)
Armpit
You should never ask you girlfriend the following things: Her weight her clothing sizes if she forgot to shower, put on makeup, perfume deodorant etc about her ex boyfriends also how many time she has had sex are her clothes to small
Deoderant is made out of soap and perfume and chloride
you would smell, like, super bad
wash your armpits and put deodorant on.
Yes you can but it will sting like hell