I always found that making sure I am completely dry in my creases and folds after a shower or bath keeps the problem under control.
I never rub the area with a towel, I pat it dry and use my hair dryer on low setting to make sure the area is dry.
In the hot weather/summer (when we get any) After bathing, I find great relief from lying on my bed,, starkers,, with a fan blowing on my bits/areas. Then before I get dressed, I use a small amount of talc (sensitive and un-perfumed). I only use sensitive shower gels and soaps. If I use anything perfumed,, OHHHHH wow, within hours my skin is red raw and weeping.
On the occasions I do have a flare up. I use either canestan or sudocrem and this clears it up within 24 hours.