Acne begins inside the pilosebaceous unit, the structure that contains a hair follicle and its sebaceous gland. Androgen activity drives sebum production, and when sebum mixes with dead keratinocytes inside the follicle, a microcomedone forms. This early plug is the seed of nearly every visible lesion. The National Institute of Arthritis and Musculoskeletal and Skin Diseases notes that acne involves the interaction of hormones, oil, bacteria, and follicular cells across all skin types.
Once the follicle is plugged, Cutibacterium acnes proliferates in the low-oxygen environment, releasing inflammatory mediators that recruit immune cells. The result is the redness, swelling, and tenderness patients recognize as inflamed breakouts.
Surface care alone rarely resolves this chain. Supportive in-office care like a HydraFacial for acne-prone skin with a salicylic clarifying booster can extract congestion and calm the surface, but the underlying biology often requires a dermatologist's prescription plan for moderate to severe cases.
