Treatment of an ulcerated naevus (birthmark) on the buttocks of a baby boy using a combination of 2 laser treatment processes. A low-powered helium/neon (red) and helium/cadmium (blue) laser beams are used in collaboration with the overlapping beams inducing a healing process in the damaged cells through a little-understood process called bio-stimulation which apparently activates collagen synthesis in the affected areas.