[Acne] How do I get rid of old bumps?

Beauty Tips For Body Care
So I had a really nasty acne, I was picking a lot, but now everything is clear, except 4 bumps that just won't go away and PIE. They are not new, not inflammed, just exist there. My routine is: AM: cleanse with foaming gel for oily face (Oxyance), tonic lotion for acne, thermal water oxyance for sensitive skin, Uriage cream for sensitive skin and redness, La Roche Posay Anthelios Ultra Light suncreen. At PM just the same, but instead of sunscreen I use a local cream for acne. I just changed my routine to this yesterday, cause I don't think a need BP and clindamycin anymore. I also have The Ordinary's Niancinamide, but I don't know if I should use it/ would help my problem.Any tips would be appreciated
Girls Blog 2015
Submitted by princessbubblegum16