Anyone tried shimmering body powder for comp? How does that work?

I saw a pro lady wearing it. Not so good, she used water based so when she is sweating, her skin looks shiny which looks funny.

I tried a powdery one, but not so good either. I don't recommend it.

Personally, although it's really pretty, it's not something that I would wear for a competition. Afterall, I don't want the powder coming off on my dresses. I would rather go for another coat of fake tan, than a light dusting of shimmer powder.