TCA cross especially at higher concentrations of 70-100% when used to treat ice-prick scars can possibly lead to slight "widening" of the scars. Depending on when the treatments were performed, the appearance of the scars may take up to 2-3 months to improve as collagen remodelling takes place.
Beyond this period of time, you may consider injectables such as Rejuran (PDRN) or collagen-stimulators e.g Radiesse and Ellanse treatment on targetted areas, to further improve the appearance of your widen scars.
Do speak to your Aesthetic doctor to understand more.
Hope this helps!
Best Regards,
Dr David Deng