pimples in teenage are common.
they occur as a result of harmonal changes .
once the harmones become stable ..this problem of yours will reduce by itself ...
what you can do is ......Maintain good facial hygiene ...wash your face twice a day with suitable wash .
avoid spicy and junk food
keep yourself hydrated by taking adequate quantity of juices and water .
see to that your digestion is proper ...to avoid any stomach ailments , constipation etc ...as these have affect on your skin.....
remedies :apply mixture of cinnamon and lime juice on the pimples and dark spots .keep till it dries and then rinse off without using soap ..just use water .
internally take manjisthadi kashaya 2 tspn with 2 tspn water twice a day 1 hour before breakfast and dinner.
take triphla churna 1 tspn with warm water at bed time ....