Photoaging is premature skin aging (wrinkles, laxity, and pigmentation) driven by cumulative ultraviolet exposure.
Actinic keratosis is a precursor to squamous cell carcinoma. What the progression data show, and how fluorouracil, imiquimod, and photodynamic therapy compared in a head-to-head trial.
What solar lentigines are, how they differ from other pigmented spots, and what the evidence supports for lasers, IPL, cryotherapy, peels, and topical agents.
How topical retinoids work, how prescription tretinoin compares with retinaldehyde, retinol, and adapalene, and how to choose a tolerable option for aging or acne-prone skin.