Dermarolling or microneedling is like a little lawn aerator for your skin. These needles create “micro” injuries on your skin which instigates collagen production to ramp up. Studies show a dramatic formation of fresh new collagen after a just a few weeks of dermarolling. Those findings also suggest favourable results for dissolving acne scars. They are really affordable too!
High quality rollers can go from 20$-50$
Proper cleansing is strongly advisable! Disinfect with isopropyl alcohol before and after each use.
Roll 5-10 times in each area horizontally, then vertically, then diagonally. A few times a week or less is good.
Afterwards be really careful to only apply something you want to penetrate your skin. Opt for natural oils and avoid big brand creams that contain loads of toxic chemicals and fragrance.
Hyaluronic acid would be my number one choice to apply on the treated area.