A mud pack is a beauty treatment that involves applying a thick layer of mud or clay to the skin. The idea is that the mud will help to cleanse and detoxify the skin, leaving it feeling smooth and refreshed. There are a number of other words that can be used to describe this type of treatment, including mud mask, clay mask, and facial. Other synonyms for mud pack might include mud wrap, mud bath, clay wrap, and body mask. No matter what you call it, this type of treatment can be a great way to pamper yourself and rejuvenate your skin.