what about no loading ?
if you aim for a loading phase, aim between 10g and 28g, divided into 4 doses, depending on how much you weight.
I tend to say take your bodyweight in pounds, divided it by 10, then you got your creatine loading in grams.
Some studies suggest that you saturature your muscle tissues for about a month when using the appropriate loading phase for 5 days. Some other studies suggest a maintenance of about 5g per day.
I haven't seen anything with creatine loading associated with pimples. And I wouldn't see why it would cause pimples.