Rebalancing the Skin: The Microbiome, Acne Pathogenesis, and the Future of Natural and Synthetic Therapies

The skin serves as the primary interface between the human body and the external environment, functioning both as a protective barrier and a habitat for a diverse array of microorganisms. The skin's varying conditions—dry, moist, and sebaceous—foster the growth of different microbial communities. While these microorganisms typically exist in a beneficial symbiosis with the host, some bacteria, such as Propionibacterium acnes, can lead to skin disorders like acne. Acne is a chronic inflammatory disease of the pilosebaceous units, predominantly affecting high-density pilosebaceous regions such as the face, back, and neck. This condition not only results in physical scarring but also has significant psychological impacts due to societal appearance standards. This review explores the skin and its microbiome, examining their interactions in detail. Additionally, it delves into the pathogenesis of acne, discussing its underlying mechanisms and potential treatments.