It means that it cannot be displayed in a pleasant, satisfying or beautiful way. It can't be fixed with makeup, which can't be beautified or watertight. It will keep you ugly and unpleasant or you have to show it as it is. You can't hide flaws, mistakes or feura from you. Unsocultable.
* Only one "like" per meaning and day, the more "likes" the meaning will appear higher in the list