I use Talcum powder in the warmer months, though as Bob stated there have been a few articles linking it to cancer. I think the consensus is that it's generally safe but don't take my word for it and read around.
I personally like TOBS "Mr Taylor" just for the scent. They still use it in barbershops as well but now they cut your hair behind a police riot shield.
If you want to use powder and have health concerns you could use talc free stuff which uses corn flour AFAIK.
There are several on the market such as Jack Black.