My chocolate has a dusty white coating — is it safe to eat?

where the cocoa butter within the chocolate melts and re-solidifies unevenly, leading to a dull and streaky surface. This type of bloom generally results from storing chocolate in a place where the temperature frequently changes, such as near a window or a frequently opened pantry.
Sugar bloom, however, is caused by moisture exposure. When chocolate is stored in a humid environment, the sugar dissolves in the moisture, and as the water evaporates, the sugar crystallizes on the surface of the chocolate. This type of bloom can often be felt as