I would not advise you to do Vi Peel on one spot only since it may lead to discoloration and obvious lines. There are different solutions for this such as laser or maybe bleaching cream. Do not undergo any treatment until your skin is fully healed which may take 4 to 6 weeks. Good luck!
Thank you for your question. You may want to have Broad Band Light (IPL) done to treat this problem are, depending on your skin type. It is done to help filter out browns or reds in the skin. I recommend to my patients that they wait at least 6-8 weeks after a peel to have a laser treatment done. This allows time for your skin to recover from the peel treatment. Also, I would suggest you contact your treating physicians office and seek their direct advice since they treated your skin.
If you have 1 remaining area of hyper pigmentation after a VI peel, I would not suggest spot treating a single area. You could consider a spot treatment with a laser depending on your skin type and the characteristics of the remaining spot. I hope this helps.