Thanks for your query.
Always wash your face with antiseptic soap.
Do not put your hand on to your face which would lead to ugly scarring of your pimples
Itching denotes that it is associated with infection, you might need to start with a course of antibiotics.
Always wash your face once you are back to home from outside.
Reduce fats in your diet and supplement it with lots of fruits and vegetables.
Drink more water for good skin.
Hope I have answered your query.
I will be available for your follow up queries if any.
Wishing you good health.