Ya that's true. Tren oxidizes at higher temp, which is why sometimes you'll see lil reddish brown specks in the oil sometimes, and for example if you've ever seen PROFINA by Medistar, its prop and tren ace mixed and its like cherry red color, because they have to cook it at higher temp to make the prop and tren all go into solution. And I've seen pics of yellow tren im pretty sure chemical advantage's tren ace is a lighter yellow like this. I would never worry with AB tho he's always put out quality stuff, and shit with those prices who wouldn't buy some? I would've except I already have like five vials of tren due here next week