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 Can you heat the OPTASE Moist Heat Mask in an oven, a combination oven with no turn table or steamer? Massaging Eyelids after using Optase Heat Mask How long should I heat the OPTASE Moist Heat Mask in a 700w Microwave? Does OPTASE Moist Heat Mask release chemicals when heated? Can I put the Optase MHM in the freezer?