Hyperpigmentation of Underarm After Chemical Peel

i had underarm and leg chemical peel.but it seems that my underarms became more darker specially the surrounding skin that has been peeled off.i also have blemishes on my legs and i got scars after the peeling..then the doctor told me to use kojic cream with arbutin on my underarms and kligman's cream on dark spots.is kligman cream can be used together with kojic cream to lighten my underarm and legs scars caused my peeling?

how can i resolve hyperpigmentation after underarm chemical peel and leg scars chemical peel?