Put 1 teaspoon of ground marshmallow powder in a small bowl.
Mix in one tablespoon of rose water and a couple of drops of rose essential oil.
Let the mixture sit so that the marshmallow absorbs the rose water and oil (anywhere from 10 minutes to a few hours).
After the marshmallow has absorbed the water/oil, it should be a gel-like consistency.
Use a fan brush or your fingers to apply it.
Let the mixture sit on your face until it dries.
Upon drying, you can either apply another layer over it and let that layer dry, or take it off with a warm cloth.
Once you remove the mask, it is important to hydrate! I use my rose hip face serum or sesame calendula oil. You get better penetration with an oil. Once that is absorbed, I apply either my night cream or my day cream.
Notes
You will have enough for a few applications, whether you do it all at once or the next morning as well. If you do not want enough for a few applications, simply halve the recipe.)