We report a case of severe skin metastases of advanced right breast cancer in an 84-year-old woman. The tumor (T4bN3cM0, Stage III C)was resected in June 2011(BT+AX)after blood transfusion for severe anemia. Radiotherapy to the right chest wall and supraclavicular lymph nodes was performed, and adjuvant hormonal therapy was administered. Local recurrences in the skin of the right chest wall appeared and were resected in December 2011. Nine months later, continuous bleeding from the progressed, widespread skin metastases needed recurrent blood transfusion. After using Mohs paste twice, the bleeding stopped almost completely. Mohs paste was very useful for stopping bleeding in locally advanced, unresectable skin metastasis.