Do NOT put deodorant on your pits in the morning! That's the advice from experts (yes there are apparently deodorant experts). Let's face it, you get up every morning, shower, brush you teeth, do your hair, put on deodorant and get dressed, right? At least that's what MOST of us do. NO NO NO, apparently that's all wrong. Deodorant/antiperspirant should be put on AT NIGHT instead of in the morning. Experts say that it's best to shower at night and then put it on, that way it has a chance to be absorbed into your skin. And most of them last 24 to 48 hours so you should be good for the whole day!