Like Gina said if u go to a doctor he might prescribe a HQ cream just to fade those marks and/or peels.. It shouldn’t take more than 3 or 4 months to sort out..
Microdermabrasion was rubbish for me as well, I spent hundreds of pounds on one of those treatments (combined with a glycolic peel) and apart from itch like mad it did nothing.. Have done TCA peels at home which only cost about £20 but were really effective and made a massive difference.