Magnesium is the ingredient in Oxypowder
which in my humble opinion is the same as Milk of Magnesia but way overpriced. (Milk of Magnesia now comes in capsules which pretty much makes it the same thing.)
I don't know about cleanser but it sure works great for stimulation! Magnesium is essential and most people are deficient in it. Taking magnesium at night can help you have a nice elimination in the morning and is good for you too!
I discovered it after having my fillings removed and taking Epsom Salts
baths. I noticed I felt really great the morning after the baths and started doing more research. Magnesium taken orally can take a long time to build up depleted reserves, but it is absorbed so well through the skin that more is taken in without the extra strain on the kidneys.
Just my 2 cents till Shelley gets here :)