A Topical Marriage Made in Heaven: The Right Active Ingredient Meets the Right Formulator
In this episode of Derms and Conditions, host James Q. Del Rosso, DO, welcomes David Osborne, PhD, a formulation expert behind several dermatologic topicals, to explore what drives topical performance, using dapsone and roflumilast as case studies.
They begin by challenging long-held vehicle dogma rooted in mid-20th-century corticosteroid training: the idea that ointments always outperform creams or lotions. They note that with newer solubilizers, stabilizers, and vehicles, those rules don’t consistently hold for products approved in the modern era.
They next revisit propylene glycol (PG) as…
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