Personally yes I would say it's probably other things contributing.
Too much caffeine
Too much dairy
Too many high gi foods
Too much stress trigures my acne
To counteract I do the following.
Swap coffee for Pukka Mint Green Tea & PureChimp Matcha Green Tea
Only have cheese now & then and for sure use an alternative to dairy milk
Eat brown grains instead of white (rye bread, brown rice, quinoa, oat cakes, ryvita are probably the best alternatives to the white stuff) & cut out foods that contain regular sugar
Exercise regualrly to reduce stress
Just doing one of these things will probably help if you dont want to put oo much effort in.
I normally drink the below a day. You could cut out the coffee or replace it with another green tea (I cant drink green tea or mathca on an empty stomach) & need a kick start.
1 cup of coffee in the morning
1 cup of matcha green tea
3-4 cups of regualr green tea
I cut out milk (use almond milk instead). Cheese (may have on the odd occasion or special occassions). Butter (I use a dairy free butter that tastes just as good). Yoghurt ( I have 1 pro bitoic yoghurt a week). It's relly easy to do to be honest as there are some great alternatives. Cheese is the only thing I am yet to find a great alternative.