SOD1 and Erythema: Moreover, the topical application of SOD, linked with the human immunodeficiency virus type 1 (HIV) transactivator of transcription (TAT) domain (TAT-SOD) at 300 U/cm2, 1 h before UVB irradiation, was effective in preventing UVB-induced erythema formation and blood-flow rise in Fitzpatrick skin type II and III subjects [144].