on the rash without burning your skin.
then apply some of the powder while in the bath, making a paste and rubbing it on.
allow it sit on the skin for ~ 10 minutes.
then wash off with hot water (no soap).
this has helped many people with the itching.
the red rash may or may not disappear, or may partially fade out with time.
however, controlling the itching is the main thing. 