Thanks for writing to us.
It is difficult to comment specifically about the time required for your acne
to clear off completely. At least two weeks to a month is required to notice good response. The treatment suggested by your doctor is perfectly as per the treatment protocol of acne.
and peeling of skin seen is probably due to over zealous application of acdermin gel. Use it in very small quantity and apply it only over the lesions. There should be a gap of at least 15 to 20 minutes between washing your face and application of acdermin. As it contains tretinoin, sun exposure should be avoided. Sometimes anti acne soap bars make skin too dry if that is a case with you replace it with milder facewash. With these steps redness, dryness and skin peeling would improve. If you want to use make up, you may use water based products.
If not much improvement is seen, you may consult your doctor regarding use of isotretinoin
As far as marks are concerned, these might fade with application of acdermin. However for better results in acne pigmentation reduction, pigmentation reducing creams like kojic acid
, Glycolic acid
etc can be used once acne has subsided.
Hope that helps. Take care