Yes, wide C-section scars can often be treated, especially when the main concern is the difference in color between the scar and the surrounding skin.
The pigment is applied gradually across the scar to soften the visible contrast and create a more even appearance. If the scar is wide but relatively flat, camouflage may still produce a noticeable improvement.
However, if the scar is very uneven, raised, indented, firm, or has significant texture irregularities, additional skin-preparation procedures may be recommended first. Camouflage can improve the color, but it cannot completely correct the physical structure of the scar. The best results are achieved when the scar is mature, stable, and as smooth as possible.