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gautam it depends what is left now,whether it is the scars
itself.If you have pimples left on the face then you should try isotretinoin
tablets ,which can only be prescribed by a dermatologist
.It has a particular dose according to your body wt.Usually it goes for 6 months .if you have pits left on the face then you have to take a laser treatment
for that.If you have red lesions or scars left then it is better to wait n watch,as it takes some time to go.So kindly check with your doctor as to what medicine was prescribed to you.