Innovative Nanocarriers: Elastic Aspasomes Loaded with Metformin Hydrochloride for Effective Management of Melasma: In Vitro Studies and Clinical Appraisal. - Albash R; Fahmy AM; Ragaie MH; Ahmed SS; El-Gazar RA; Kassem AB; Abdelbari MA; Salem HA; Saleh A; Mosallam S (Pharmaceutics, 2026)