Blood Powder should be applied in a thin, even layer to the model's dry skin, in the desired area, using a powder puff or brush. Once applied, the powder is imperceptible to the eye. The object that is supposed to inflict the wound is moistened. It is then brought into contact with the area of skin covered in the powder. A trickle of blood immediately appears, its size depending on the amount of wetting agent applied to the object. Blood Powder is formulated from soluble dye and stains textiles. It can be difficult to remove from some surfaces. To ensure that Blood Powder does not stain the model's skin, it is best to use it after applying a greasy eye shadow as a protective layer.