Place hair across the surface to be ventilated, put the tool across a strand of hair and push into the surface, withdraw the tool. The hair(s) should stay in the material. Always push the tool in the direction that you want it to "grow" out of the scalp. If you need to lubricate the tool use soap, silicone or other material that is compatible with the skin material. Works well with vinyl, latex, foam latex, silicone, gelatin or other faux-skin materials. Glue on the inside can be used to secure hair, but is often not needed unless the hair will be pulled or tugged. Use of this tool takes time and patience. Use of a wig or hair piece with ventilation around the margins is a common practice. WARNING: Not for use on living tissue. Not an approved cure for baldness on real people. The point is sharp. Keep this tool away from children and clumsy people.