Before putting DMSO on it...try the CS on it FIRST.  CS works wonders on the 
skin.  Don't just use it once...use it as many times a day that you think 
about your rash....  My Jack Russell Terrier had "hot spots" from fleas... I 
put CS on her several times a day (when she would let me) and her hot spots 
cleared right up...and have never come back.  CS can be used directly in your 
eyes...I don't think you would want to put DMSO directly in your eyes.  By 
the way, if I am not mistaken DMSO is horse linament.  I used to use that for 
my aching back...and all that I ever got out of using it externally...was bad 
breath literally.  I steer clear of DMSO..and to those folks who ingest the 
stuff...good luck to you.... 
CS yes...DMSO...no.
Anyway, you can't make DMSO at home either like you can CS.  Wonder why?