A vaginal contraceptive ring primarily serves as a hormonal birth control method but is not specifically FDA-approved for treating acne. It releases a combination of estrogen (ethinyl estradiol) and progestin (etonogestrel), similar to oral contraceptives, which may indirectly help with acne by regulating hormones that contribute to breakouts. Some users report improvements in acne while using hormonal contraceptives, including NuvaRing, though this is an off-label benefit.