A glass dappen dish can be used to hold nail liquids such as acetone, which is a solvent used for removing nail polish or acrylics. The glass material is preferred because it is non-porous, easy to clean, and resistant to the harsh chemicals found in acetone. When using a dappen dish, it's important to ensure it is placed on a stable surface to prevent spills and to use it in a well-ventilated area to minimize inhalation of vapors.