I only break out post cycle on long acting esters.
Sust got me good for about 2 months post cycle with moderate acne (6-8) on my shoulders. Kinda defeats the purpose if you;re afraid to take your shirt off.
Since then I only use short acting esters.
Prop and no-ester for my tests. I also use
anavar as the anabolic in those cycles. No acne.