To keep your skin acne free , you need to follow a proper skin care regime. Use a face wash containing salicylic acid
to cleanse your face atleast twice a day. Always use a water based moisturiser meant for oily skin and get your comedones (blackheads/whiteheads) extracted at regular basis. In case of active acne lesions, you need to take oral antibiotic or isotretinoin
along with anti acne creams for local application. One can also consider the option of chemical peels
to tackle acne as well as the scars and pigmentation marks. Scars can also be treated with microdermabrasion
, dermarollers or in case of severe scars with lasers.
As you have mentioned that you are having red elevated skin lesions which become pus filled and then heal with scars, I would suggest you to consult a dermatologist
to assess the severity of acne and put you on medication accordingly. Taking medication would surely prevent in development of further scars. Take care.