Lane A T, Wachs G N, Weston W L
J Am Acad Dermatol. 1983 Apr;8(4):523-5. doi: 10.1016/s0190-9622(83)70059-9.
A double-blind, vehicle-controlled comparison of two glucocorticosteroid ointments demonstrated that once-daily therapy for psoriasis was effective. After 3 weeks of once-daily therapy, psoriasis subjects treated with betamethasone dipropionate (BD) ointment or diflorasone diacetate (DD) ointment showed statistically significant (p less than 0.01) improvement compared to subjects using vehicle alone.