^^^do u use it? it wont cause scar tissue if done right, but i have not had one problem with scar tissue at all but ive only been using it 3 months. i dont know wat long term there is, all i know is my arms went from 20 to 22inches and i gained 4 inches on chest, with not one problem. its suppose to strecth out the muscle for bigger gains without using it but like i said i have no expierience with that yet as i do maintance injections. never one abcess, just a lump appearence until u message it right after inject. then i go to gym to get it " worked in more". i have heard of people getting abcesses from it but that was the ones who used diff product like pump-n- pose, cheap shit. everyone i know that uses syntherol has not had one problem. i dont know about wat books say i dont listen to online stuff. just my 3 months use opinion. i posted that it was legal to get, as i get from australia. do u read my posts before u post, iam not knew to this. i dont pin my dick but guys that i know do. i wouldnt do that, but, they said they got alot of girth not length, but i dont give a fuck wat anybody else does. thousands use the stuff daily with no complications. but everything has side effects, thats my choice to use it. i was taught by a pro and a few npc competitors, they used it going on 2 yrs no scarring.