Thats not true. Its not neccessarily the substance but instead the person genetics. If your acne prone your mostly likely gonna get acne from gear. I get bad acne from substance with little androgenic activity like anavar which people say does not have sides. If your not acne prone you may get a little acne. Tell him to buy some vitamin B5 and take 10g's a day in 4-5 doses spread out. Also tell him to take 3 showers a day and wash his back. This could help or it might not. There is not much that wil stop back acne besides accutane however. He could try to get some minocycline from a dermatologist as well or some evoclin antibiotic foaming wash which could help a little.