What's a fast way to take care of heat rash in the bikini area?

An 'air bath' Heat rashes develop from moisture that cannot evaporate or be absorbed around the vulvar area. Cotton underwear, stocking and denim avoidance and a :'air bath' for 10 minutes at the end of a workday post clothing removal all help. Also ditch the razor to allow the pubic hairs to trap and remove bacteria and moisture. There was a reason mother nature grew hair in that location.