Moles are usually removed by converting light energy from a laser into heat, which is then absorbed by the pigment in the skin, causing the breakup of the mole. Skin tags are removed using the gold standard thermal diathermy, which uses thermolysis to cauterise and coagulate the small growth, most commonly used for medium to large size tags. For much smaller ones, we would perform cryosurgery, where the tag is frozen off using liquid nitrogen.