hi..Thanks for your query..
Pimples have a very direct relation with hormonal
changes in the body..they might be due to physiological hormonal changes in the body,like during puberty
,or due to external/internal hormonal therapies.Since Copper T's release hormones ito bloodstream,you might have the acne mentioned due to it..
You can start with Salicylic acid
2% cleansers and use it twice a day to wash your face.Start application of topical clindamycin
gels once daily on face.YOu might add on a mild retinoic acid
on alternate nights.TMost anti acne therapies dry the skin especially in winter.take care not to make your face very dry and also use oil free gel based moisturizers.