To create an 'open wound', the Derma Wax construction has to be 'cut open' with the sharp side of a Derma Wax spatula.
Tip: Let the model (especially if it is a child) feel in advance that the Derma Wax Spatula is not really sharp, to prevent a shock reaction when making the cut.
Lubricate the tip of the spatula with a little bit of Cleansing Cream. This will allow the spatula to slide more easily through the Derma Wax, preventing it from sticking to the spatula. Hold the Derma Wax Spatula slantwise on the skin when cutting so that the spatula does not feel too sharp for the model.