I have spots, acne, and pimples with pus on face, are they dangerous?

Hello doctor,I have been having acne and pimples from the past 4-5 years.I used to take lots of medicine and use different types of lotion and sunscreen prescribed by the doctors.Whenever I take the medicine the pimple and acne goes away but when i stop using both the acne comes back again.So what should I do and why is this happening.Now I’m having lot’s of acne in my forehead it’s sometimes itchy and acne on cheek which has pus and whenever i touch it it’s paining.I’m 20 years old female

Age: 20
Medications: Acutret,veloxvit,vitakind