I have psoriasis on my scalp and I love this! I usually apply a pretty thick layer, then put on a shower cap for a couple of hours, after that it's just to gently peel off, which is much easier than other methods I've tried. The cooling effect is absolutely wonderful when my scalp is irritated, and I don't get nearly as dry afterwards as with other exfoliating treatments I've tested. If you have any sores, it will be felt, but I don't think it's that dangerous compared to something like Betnovat and similar.