Hi..
Welcome to HEALTHCARE MAGIC..
As per your complain it seems that
benzoyl peroxide has helped in reducing pimples as you have mentioned in your question that the pimples have left black pigmented marks..
In case if you still have pimples you can wash your face with
salicylic acid containing facewash.
You can apply a combination of Clindamycin gel and Benzoyl peroxide gel..
Retinol containing ointments like Isotretinoin can help..
Take
multivitamin supplements..
Do cold compresses..
Once the pimples resolve to reduce the dark spots you can apply kojic acid containing creams and vitamin E gel.
Exfoliate your skin twice a day using a mild scrub.
Wash your face frequently throughout the day..
Always apply a sunscreen lotion when exposed to sun..
Avoid oily food, drink plenty of water..
You can also
consult a dermatologist and get certain procedures like
Microdermabrasion, galvanic facial etc done to reduce the dark spots..
Hope this information helps..
Thanks and regards..
Dr.Honey Nandwani Arora.