Clobetasone butyrate is a synthetic glucocorticoid and has topical anti-inflammatory activity especially in skin. Clobetasone butyrate can be used to relieve corticosteroid-responsive dermatoses, including atopic dermatitis and psoriasis^[1]. IC50 & Target: IC50: glucocorticoid^[1] In Vivo: Clobetasone butyrate (application on the skin; 0.05%; 7 weeks) induces epidermal thinning in skin, Clobetasone butyrate 7 weeks causes much less epidermal thinning in the pig than flurandrenolone (0.05%) or fluocinolone acetonide (0.025%), both of which causes severe atrophy^[1].