Common misconception: the sun makes acne disappear

Many people believe that sun exposure can improve acne. The idea is appealing: after a few days in the sun, skin often looks more even, redness seems less visible, and blemishes appear less pronounced. However, this perception is largely misleading. While the sun can temporarily dry out some pimples, it doesn't address the root causes of acne and can even worsen the situation in the long run.

Acne primarily results from excess sebum, clogged pores, and the proliferation of the bacterium Cutibacterium acnes. Sun exposure does not alter sebum production or the skin's inflammatory response. On the contrary, the sun can cause hyperpigmentation of inflammatory lesions, leaving behind lasting dark spots that are sometimes difficult to treat.

Furthermore, prolonged exposure to UV rays leads to a thickening of the skin, known as keratinization. This reaction can worsen pore blockage and encourage the formation of new blackheads and whiteheads. Individuals using topical treatments for acne, such as retinoids, are especially sensitive to the sun's irritating effects. Without adequate sun protection, the risk of sunburn, redness, and hyperpigmentation is high.

Tanning can create the illusion of a more even complexion and temporarily hide imperfections, but it does not treat acne at its root. Dermatologists instead recommend tailored skincare, such as gentle cleansers, chemical exfoliants containing acids (like salicylic acid), and topical treatments that regulate sebum. Sun exposure should be limited and protected with a non-comedogenic sunscreen, even for those hoping for a beneficial effect on their skin.

In summary, sun exposure is not a treatment for acne. It can temporarily mask some blemishes, but it poses many risks to the skin, including hyperpigmentation and premature aging. To effectively manage acne, it's essential to adopt a suitable routine, consult a dermatologist if needed, and protect yourself from the sun responsibly.