Ok, so I know this is an odd question but I am going to ask it anyway. At what age should a boy start wearing deodorant? My son turns 9 in less than a month and he asked to use some the other day. I let him but now I am wondering if he should be using it daily now. He sweats a LOT but doesn't have a b.o. smell or anything. He has always been a sweaty kid. Is it necessary to have him use it at such a young age or should he be older??