The sheet mask uses our NEW 100% Biodegradable Packaging. Once opened, our new eco pouches begin to biodegrade immediately, taking just 1% of the time compared to traditional plastic. That’s 500 years down to 5 years with no trace of microplastics in the soil or sea! This environmentally friendly biodegradable material can be disposed of in general waste, recycling bins and home composts - it will biodegrade in all environments.