Can the OPTASE Moist Heat Mask be placed in a UV sterilizer to clean it? 17 July 2025 12:58 Updated It's perfectly fine to put the OPTASE Moist Heat mask in the UV sterilizer for cleaning. Related articles Massaging Eyelids after using Optase Heat Mask Does OPTASE Moist Heat Mask release chemicals when heated? Can you heat the OPTASE Moist Heat Mask in an oven, a combination oven with no turn table or steamer? How long should I heat the OPTASE Moist Heat Mask in a 700w Microwave? Can I put the Optase MHM in the freezer?