Although, it can begin as early as age six, most commonly people do not develop acne until their body goes through the hormonal changes of early teenage years. Acne can last through the teen years into the 20’s with this happening in up to 40% of males and 50% females. Unfortunately for some people, acne can continue on or redevelop past the 20’s and all the way into the 40’s.
It is a common misconception that only those who had acne early in life will develop it later in life. Even if you did not have acne as a teenager, you could very well develop it at some other point in life. This reemergence of acne has a higher probability for females than for males.