An allogeneic cancer vaccine composed of a mixture of lethally irradiated whole melanoma cancer cells obtained from four different melanoma cell lines, with potential immunostimulating and antineoplastic activities. Upon intradermal injections, allogeneic irradiated melanoma cell vaccine may stimulate the body's immune system to exert a cytotoxic T-lymphocyte response and antibody-dependent cellular cytotoxicity (ADCC) against the melanoma cancer cells.