Acne can affect people of any age, but it is most common during the teenage years due to hormonal changes. The teenage years, especially between the ages of 12 to 18, are often considered the worst period for acne for many individuals. However, adult acne is also a common occurrence and can persist into a person’s 20s, 30s, and even beyond. It is essential to consult with a dermatologist to determine the best course of treatment based on an individual’s specific situation.