You can try crush vitamin A tablet get it from Solgar Dry Vitamin A it has retinyl palmitate 5000IU and L-ascorbic acid 10mg and apply the powder on the scars and apply hot water compressed 60-70degree into cotton ball and hold onto the scars areas 1-2minutes. Wash it thereafter.

Chemical peels, vitamin c serum during the daytime, retinol product at night. Apply sunscreen in the morning because your skin becomes more sensitive to the sun when using these products. If you have a texture issue (i.e. pitted scars) then add dermarolling and a collagen serum to your regimen. I also suggest using a moisturizer that has ingredients for lightening/evening out skin tone (arbutin, kojic acid are two examples)