Antiperspirant not deodorant. Most antiperspirant uses aluminum which if applied before bed allows time for it to get in to your pores and be ready to prevent sweating the next day. It won’t be washed out by a shower. At least that’s how I’ve understood it from reading the box of my antiperspirant.

Off topic but honestly, if Apple released a MacBook with the color options of the iMac I think they would sell like crazy