What are the downsides of sheet masks?

The American online store of "clean" cosmetics Credo in June last year completely refused to sell cloth face masks, even if they have the most environmentally friendly composition that does not contain harmful preservatives. The reason is that petroleum products are used to make the fabric base. The mask is packaged in a foil bag, which is not subject to environmentally friendly disposal and reuse. In just a few months, the online store has reduced the amount of waste by 1360 kg - this is an impressive figure. If you buy a tube or jar with a mask, then you use it for at least 2-3 months, and the main problem with sheet masks is that they are only suitable for one-time use. But the Korean brand Innisfree produces masks from eucalyptus fibers impregnated with an organic compound.