Does dark spot corrector work on post acne red marks? thanks!

No: Usually dark spots corrector is used on dark pigments seen on the hands as women age. Because it is formulated for the spots or lentigos on the hands I would not use it on the face. Acne has an antinflammatory component that aging spots do not have. To avoid possible scarring of the facial skin I would not recommend using it on the face. Follow label directions for safest use.