The perspective of Donguibogam aligns closely with modern dermatological science. Skin troubles caused by masks, commonly termed maskne, represent a complex skin condition rather than simple blemishes.
The first mechanism is the occlusion effect. When a mask covers the skin, sweat, sebum, keratin, saliva droplets, and warm, humid exhaled air are sealed within that space. This warm, moist microclimate provides an ideal breeding ground for surface bacteria, particularly acne-inducing organisms such as Cutibacterium acnes (formerly P. acnes) and Staphylococcus aureus.
The second factor is friction. As the mask rests against and moves across the skin, it applies continuous physical friction. The skin easily abrades and develops microscopic fissures, particularly along areas of direct contact such as the cheeks, chin, and nasal bridge. This friction compromises the skin barrier and triggers an inflammatory cascade, acting as the primary cause of acne mechanica or aggravating preexisting acne.
The third factor is impaired skin barrier function. Although the high humidity inside a mask may feel hydrating at first, water evaporates rapidly once the mask is removed, leaving the skin markedly dehydrated. As moisture balance is disrupted and mechanical friction continues, the skin barrier sustains damage, local immunity drops, and the skin becomes prone to redness and pruritus from minor stimuli. This progression can manifest as contact dermatitis, folliculitis, or perioral dermatitis.
Internal factors such as stress and diet also contribute significantly. Chronic stress promotes the release of cortisol, which increases sebum secretion and intensifies inflammatory reactions, thereby worsening acne. Diets rich in refined carbohydrates or dairy products stimulate insulin-like growth factor 1, which increases sebaceous gland activity and deepens breakouts. Donguibogam's damp-heat corresponds directly to bacterial overgrowth and an inflammatory microenvironment, while wind-heat corresponds to external irritation and skin barrier breakdown.
