Tretinoin cream is a topical retinoid (vitamin A derivative) mainly used in dermatology to treat acne, signs of photoaging (sun damage), and certain pigment problems on the skin .1. Acne treatmentTretinoin cream is commonly prescribed for mild to moderate acne vulgaris (common acne) that causes blackheads, whiteheads, and pimples . It works by:Unclogging pores and preventing new comedones (blocked pores) from forming .Increasing skin cell turnover, which helps shed dead skin cells and reduces pore blockages .Reducing inflammation and the frequency and severity of acne breakouts over time .It is often used alone or in combination with other acne medications like benzoyl peroxide or antibiotics .2. Anti‑aging and sun damageTretinoin is one of the most studied topical treatments for early signs of skin aging caused by sun exposure . It helps improve:Fine lines and wrinkles by stimulating collagen production and increasing skin thickness Rough, uneven skin texture and dullness by promoting faster cell turnover .Sun‑induced dark spots (solar lentigines) and overall skin tone .Regular use can give the skin a smoother, more even, and “rejuvenated” appearance over several months 3. Hyperpigmentation and dark spotsTretinoin cream is used to treat various types of skin discoloration, including:Post‑inflammatory hyperpigmentation (dark marks left after acne or injury) .Age spots and sun spots caused by UV damage .Melasma (patchy brown or gray‑brown facial pigmentation), often as part of a combination regimen with sunscreen and other lightening agents .By speeding up skin exfoliation, tretinoin gradually lightens dark spots and evens out skin tone