Suggest Treatment For Pimples

I have pimples on my face .back and chest too.its now been 3 years that pimples are on my skin .my face is too filled up with pimples. Some are poppable and some are not .on my forehead there are many very tiny pimples which are unpopable .n on cheeks and neck too..my chest also have some large amount of these .on chest tgre ante may popable ones and some are also on my arms.I ve tried many remedies to remove them not now it just won t happen.I also tried avoiding dairy products but it didn t help .so I m consuming everything again now. And also I have the diet which do not include any junk food .n nor do I drink and sodas .so where is this coming from.I am taking this medicines which my friend suggested it says it detoxies your body and he told me that if your body is free from toxins then they skin will be better ..also I found out that omega 3 helps skin so I m taking 1 capsule a day .I just stated this a week ago.n that capsule contains omega 3. 500 mg and some boiprene 50mg.should I take it .n that detoxifying capsules I take after having my dinner while I m about to sleep . so please help me to remove these pimples and also I see when sometimes I eat junk food the more pimples appear other than the small ones after the day I eat junk food .so pleas help me.for thses 4 years I ve looked worse and it hammersd my confidence .so I don t to people now .Tell me if I need to take multivitans like recital or something like that .these pimples irritates me a lot they are itchy now small ones.I just want to clear my skin as soon as possible .thank u