It is said that green tea acts as a antioxidant. Weather it reduces any pimples on the face...

Will disappoint. Green tea is variously promoted as "very good" or "very bad" for you -- it's an interesting mix of active substances but this isn't your answer. Antioxidants won't touch acne or most other illnesses. You're an adult and you owe it to yourself and those around you to get serious acne managed scientifically. If benzoyl peroxide doesn't clear you, get with your personal physician.