Betamethasone dipropionate was patented by Merck in 1987 as an augmented cream/lotion, Diprolene in the ., and Disprosone in Europe.  These patents expired in 2003 and 2007 respectively leading to generic production of betamethasone dipropionate. During this time other topical corticosteroids such as triamcinolone acetonide and clobetasol propionate also became available as generic creams. Merck filed for "pediatric exclusivity" in 2001 launching a clinical trial to prove betamethasone dipropionate's safety and efficacy for use in pediatrics. 
Clobetasol propionate is a man-made corticosteroid that is used on the skin (topically). It is available as foam, shampoo, cream, gel, lotion, ointment, solution, and spray. It is similar to alclometasone (Aclovate), hydrocortisone valerate (Westcort), halobetasol ( Ultravate ) and several others. Topical clobetasol is used to treat certain scalp and skin conditions such as psoriasis , rashes, and dermatitis . Corticosteroids have potent anti-inflammatory actions and also suppress the immune response. Clobetasol is a very potent topical corticosteroid and should only be used for a short period of time. Long term use of topical clobetasol propionate can cause serious systemic side effects and should be avoided.