Results: the total effective rates are 100%. Although a few of pigmentnevus recur, it is still good therapeutic effects After treatment of 2 times.
结果：总有效率为100%，少数色素痣有复发但经第2次治疗仍能达到最佳疗效。
2
Methods :221 cases of facial skin pigmentnevus and freckle were treated with chemical solution combining chemical drug and traditional medicine, and then the clinic effect were observed.