Fine rash caused by bowel cleanse?

My last post is there but I can't access it. Weird. I'll try again.

I have started a Bowel Cleanse 4 days ago using OxcGen capsules (oxygenated magnesium oxide) and Dr Schultze's No 3 (bentonite and psyllium) at 1 tsp a day. I'm deliberately avoiding Cascara. I'm starting slowly as I don't want to get constipated or gassy, so will build up both products as I go along. So far I have developed a fine non-irritating rash which is over my upper chest, back, shoulders and upper arms. Is this likely to be caused by my bowel cleanse?

I do parasite cleanses a la Dr Clark and have done 3 successful liver cleanses. Any ideas?

Thanks