Mehron Spirit Gum w/ Spirit Gum RemoverMehron Spirit Gum is a common adhesive used to adhere appliances, crepe hair, false mustaches and beards, woochie products and many more prosthetics. Spirit gum is mild grade adhesive and once applied to the skin it is water and sweat proof. Spirit gum is a preferred adhesive when applying foam appliances because it is lightweight and easy to remove. To use: Apply a thin layer of spirit gum to the back of the appliance or directly to the skin. Allow