Erythromycin ointment can prevent infection. Dot mole usually uses laser Dot mole. The huge heat released by the instrument can act on the deep part of the mole, which can make the pigment in the deep part absorb heat.

Erythromycin ointment is used for suppurative dermatoses such as impetigo, small area burn, ulcer surface infection and acne vulgaris. Erythromycin ointment is usually used before Dot mole, which is usually beneficial to Dot mole's work.