1stly,at this point stating there's no acne-diet connection is ignorance.
but it's also true that dietary changes are not a solution for many.doesnt mean there's no connection.it's proved.
it's like cigarette doesnt cause cancer in all.but only a mad man will deny there's no link.
2ndly,i dont support extreme of anything.(that is my personal opinion).
so i will say eat a diet that is good for YOU.
Eat good stuff and check for intolerance or triggers.
u can start with dairy and then go for gluten.
these two happen to quite famous villains.
u r to try for at least 2-3 mnths.
then,test for particular items like members of night shade family etc.
also,have lots of water - the whole detoxifying concept does work!
i dnt think going completely away from topicals is right.
bp is FDA approved although its known to be quite harsh.
so u can spot treat.
u can also try milder topicals like clindamycin(with or without nicotinamide)
USE A GOOD MILD BHA WASH
treating ur present acne in any way is important ,prevention is another step.
so find out the cause - hormones,vitamin deficiency,messy skincare or diet overlapped with genetics and then attack.
but meanwhile treat the present ones also.