Androgen hormones excess is one of the reason for the pimples, that's why it starts at puberty & in some patients persist till thirties. Our concern is to prevent post acne scars, black spots. Chemical peeling have adjuvant role along with medicines, it does exfoliation, glow the skin, and removes black heads. It has more cosmetic value. There are 4 to 6 sessions of chemical peel every 3 weekly, go for it , if you are concerned about your looks. But pimples can reappear even after chemical peeling, consult dermatologist for good medical treatment to control pimples.