Does rubbing tea bags on your face help with acne?

My grandma always tells me that rubbing all natural tea bags on my face will cure my acne. Im not sure if it would cause more problems with my acne or not. Have any of you flutheries every tried it?
I am at my ropes end with trying all these acne meds that are suppose to take care of my face. None of them work and i have been trying things for over 6 years.
So any advice about the tea bags? And have they worked for you?