Laser mole removal twice usually does not cause cancer, but benign mole cells can also become malignant melanoma, so it is best to reduce the stimulation of benign moles. If you find that the pigmentation of a mole increases, the black color deepens or the mole keeps expanding and increasing in hardness, accompanied by pain and itching, you should go to the hospital as soon as possible to receive an examination to rule out the possibility of melanoma in the mole. If the mole is a melanoma, laser treatment will accelerate the spread and metastasis of the melanoma, so it is usually necessary to have an enlarged excision, and other tests should be done before the enlarged excision to see if there are metastases in the local lymph nodes and other parts of the body.