Etude house 0.2mm air therapy series consists 15 varieties like strawberry, lemon, blueberry, damask rose, etc. Find my reviews here. These masks are made of 0.2mm super thin hypoallergenic cotton and is “light and comfortable like air.” they are also 7-free and only contain ewg green grade ingredients. They come in 3 different types of essences, in order of viscosity. moist runny essence; ampoule essence; and emulsion essence. Most of them have alcohol listed pretty high up on the ingredient list though.