I had the same issue, weight loss and all. I ended up using an antiperspirant wipe (specifically this one: https://www.amazon.com/gp/aw/d/B00H0DW9NG/) particularly on my face and neck, and it has been super effective. Warning, it stings quite a bit (I mean, like you just fell face first into some nettles), but I…

An aspect of all of this to remember is the CBP does not have the right to make you unlock your phone (assuming it is locked with a passcode). Granted, this may start a whole different series of events, but it is worth knowing if you really don’t want to provide the data on your phone (or at the very least, delay the…