Abstract
Topical hydrocortisone and betamethasone-17-valerate were tested in alcoholic solution in human skin for their influence on a developing ultraviolet light erythema. Although the normal response was augmented by the ethanol vehicle, both drugs, applied before exposure, inhibited the erythema induced by irradiation of the sunburn range (UVB). They did not inhibit a phototoxic erythema induced by 8-methoxy-psoralen and long-wave irradiation (UVA). The pigmentation caused by the UVA exposure also appeared after UV stimulation which was too weak to evoke erythema.
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