Is there a procedure to fix the skin after OTC corn treatment? (photos)

Hello! Unfortunately, once skin loses its pigmentation ability, it is essentially lost. This is called hypopigmentation. The best fix for this on a non-facial area is really paramedical tattooing if the pigmentation difference bothers you. In all honesty, it is unlikely anyone but you notices it. However, if it is something that you want to be changed, I would recommend considering tattooing the light area so it better matches the surrounding skin. Paramedical tattoo artists are the same professionals that do 3D nipple areola tattoos after breast cancer and help camouflage stretch marks (and so they are usually different in terms of their expertise than standard tattoo artists). Wish you all the best!