It is definitely not good for the skin, if you intend to leave it on your skin forever, but soap is supposed to be rinsed off at some point, and then you can benefit from any oils that are contained in the soap and will (partially) stay on your skin.Here’s the last two paragraphs of a piece written by Henk Verhaar for The Shave Room. If you think soap is good for your skin, read the whole article.