Better solution is to keep the freggin hands of the coral. Think that the little damage you have to your hand and multiply that because what happens to the coral when you touch it is worse.
If you can't help it as many new divers claim, add a small squirt of air to your BC and move a few feet up off the coral. You will still be able to see everything and enjoy your dive, you won't get a rash and the coral will be there for the next diver to see.
So during your next dive, remember the pain you caused yourself and remember keep the freggin hands of the coral.