Are steam heated eye masks recyclable? How to use steam heated eye mask--Benefits of steam heated eye masks frm Specialist Ophthalmologists, steam heated eye masks are daily necessities, and only steam heated eye masks produced by factories that implement ISO13485 standards can be considered medical products. The effects of steam heated eye masks advertised by businesses, such as relieving visual fatigue, promoting sleep and improving dark circles, are only auxiliary effects and do not have any therapeutic effect. The choice of steam heated eye masks produced by factories that implement ISO13485 is the only condition that meets the medical device standard, and very few factories in China that currently produce steam eye masks are ISO13485 certified. Using steam eye masks made in such ISO13485 factories is effective!