You know, I had never heard this but a sort of vaguely similar experience to StangBanger (a bit different though). When I first started bodybuilding more or less any test booster, and the first hormone cycle I did had me break out fairly badly, sometimes on my face, but always on back/shoulders/bis. Once I had gotten down to below 18% bodyfat, and had been working out and doing cardio regularly for a long time (all of which changes insulin sensitivity) I stopped getting much in acne no matter what ridiculous cycle I ran. And I ran some pretty freakin ridiculous short term cycles.