Tretinoin 1% is
a topical medication, a retinoid derived from Vitamin A, primarily used to treat acne and also for addressing fine wrinkles, dark spots, and rough skin caused by sun damage. It works by increasing skin cell turnover, which helps to unclog pores, reduce the appearance of wrinkles, and improve skin texture. It's a prescription medication, typically applied once daily at bedtime, and requires a comprehensive skincare routine including sun protection.