Face mask ingredients : unfiltered apple cider vinegar, filtered water at room temperature, cotton. Mix one tablespoon of apple cider vinegar for every 3 tablespoons of water, until they are integrated. Soak the cotton in the solution and apply to the skin of the face, letting it dry well before rinsing it with warm water. Apply in the morning and before going to bed. The mask has astringent properties that will help absorb excess sebum and restore the skin’s acidity levels, which are necessary to eliminate bacteria and germs.