<prompt> The most potent topical coicosteroid is:Hydrocoison butyrate cream 0.1Betamethasone Valerate cream 0.1Clobetasol propionate cream 0.5Clobetasone butyrate cream 0.5  <response>: The most potent topical coicosteroid is betamethasone. It is similar to dexamethasone. used for eczema, dermatitis, allergies, rash REF.Essential of medical pharmacology K D TRIPATHI 6 Edition - Page No 282 