It's used like regular baby powder. Apply it dry to your just shaved face/neck. My barber puts some on a brush and applies it to the back of my neck after a hair cut. I don't know what powder barbers use, but it's been the same scent my entire life...
Please tell me you're kidding. Leaving depilatory powder on your skin sounds like a great way to get a chemical burn. Are you quite certain it's the same product? Because I've used the Magic brand pre-mixed depilatory many many times, and am very familiar with its properties.
No, barbers don't use the same product, but they do use powder. It was just for comparison sake since the OP didn't know how it was used.
Ah, I see where you're coming from, but this isn't that kind of powder. The Magic powders are meant to be mixed with water into a paste, then applied to hair for chemical dissolution.
Smells like an explosion of rotten eggs.
Bingo, it's horrible.
A stink that crosses all cultural barriers.