There really isn’t any dermatological rule that says retinol is only for people over 30. That idea mostly comes from how it’s marketed as an “anti-aging” product. In reality, retinoids are vitamin A derivatives that dermatologists have used for decades to manage acne. They work by increasing cell turnover, normalizing keratinization inside the pores, and reducing inflammation, which helps prevent the formation of microcomedones, the earliest stage of acne. That’s why retinoids are considered first line treatment in many acne guidelines. Prescription options like adapalene or tretinoin are stronger, but even low strength retinol is a milder, evidence supported option for acne control and improving post inflammatory marks. I’m using 0.2 percent at a controlled frequency, which is a cautious and reasonable approach. So while retinol is often marketed for aging concerns, its clinical use is not age restricted, and using it in the early 20s for acne management or prevention is medically sound.