What Causes Sun-Damaged Skin?

Ultraviolet light reaches living skin cells and can trigger oxidative stress and inflammation. Over time, this breaks down supporting collagen and alters elastin, so skin may become rougher, less even in tone and more lined. Pigment-producing cells can also respond unevenly, creating freckles or darker patches. The effect builds quietly: a person may notice changes years after the exposures that contributed to them. Sunburn is a visible sign of intense exposure, but skin can accumulate ultraviolet injury without a burn.

Your natural skin characteristics, outdoor habits, medicines that increase light sensitivity and use of tanning devices can influence the pattern. Photoaging is different from ordinary age-related change because ultraviolet exposure is a major driver.

Use broad-spectrum sunscreen as directed, reapply when outdoors for extended periods or after swimming and sweating, and combine it with shade, clothing, sunglasses and a wide-brimmed hat. Avoid tanning beds. A gentle cleanser and regular moisturizer can support the barrier, while picking or aggressively scrubbing rough patches may increase irritation. A dermatologist can discuss retinoids, pigment treatments or procedures when texture or discoloration is persistent; the right option depends on skin type, sensitivity and the area being treated.

Arrange a dermatology assessment for a spot that is new, changing, repeatedly bleeding, crusting, tender or not healing. Seek care sooner if a mark develops a noticeably different color or outline from nearby spots. These signs do not diagnose cancer, but they deserve direct examination rather than treatment as a cosmetic sun spot.

Ask which changes are consistent with photoaging, whether a particular spot needs examination, which sunscreen texture suits your routine, and whether a retinoid or in-clinic treatment is appropriate for your skin.