Mehron Dark Stage Blood 1fl oz Mehron professional theatrical makeup £4.99 Out of stock. Mehron Dark Stage Blood is a lifelike, slow running blood that is a nearly opaque liquid. Included: 1 x 1fl oz Dark stage Blood Non toxic and so safe it's even edible. Can be used in and around the mouth. Application/Removal: Washes off skin easily with soap and water. Test for staining on clothing.