Thank you all so much for your help. I will look into all these products.
I have already learned so much from this forum. Son (#2) is a high school sophomore, but already seems committed to a life in theater. The production in December was a teacher's adaptation of "Chronicles of a Death Foretold" and he played one of the murdering brothers (was supposed to be 'swarthy' with a 5 o'clock shadow -- he got the rash from whatever they used to make him 'swarthy', since he is normally fair-skinned), and also designed the Powerpoint backdrop and the program, and assistant-directed.
Since he's the 'go-to' kid for every play, musical and revue the school puts on, he never wants any 'minor' thing like a serious skin rash to get in his way, lol!
I'm sure I will be asking more questions on this board as time goes on. There's a wealth of knowledge here!