Welcome to Healthcare Magic
Good Day
Hi dear, Has this pigmentation come off acutely. You need to first get tested for diseases which can cause this like Addison's disease. There are a lot of good skin bleach creams containing
Hydroquinone which can whiten skin but do get checked up from your Doctor first, if you have weakness,
dizziness on standing up,
back pain etc.
Consult a Dermatologist about these skin bleaching creams.