Synthetic anything is both dangerous and a big waste of time get the real stuff, and stop putting your body at risk, im pretty sure no one knows the longterm affects of these rcs and synthetic cannabinoids, and some could be bad!
If you must use it, practice very good HR. Just my 2 cents
Synthetic doesn't imply dangerous, and natural doesn't imply safe. Many plants are toxic to humans, and we are heavily dependent on synthetic drugs to survive, some of which are relatively danger-free.
Unknown danger does not imply greater danger. We should be cautious that not much is known about these chemicals, but we shouldn't be overly scared that we don't know much about these chemicals. I don't know if someone is going to try to kill me tomorrow or not; should I be scared? This situation is extreme, but it's to show the point that we have to be rational with what we should be scared of. I just feel some people are too quick to jump on the we-know-nothing-about-these-chemicals-therefore-they-are-dangerous bandwagon.
If one really thinks that these are likely to cause harm, then that's ok. For me personally, I'm willing to take the risk. I'm also willing to accept the possible consequences in later life (or even immediate life, at that matter). It's similar to the idea that if you are willing to argue, then you have to be equally willing to admit when you are wrong, and apologise.
Edit: also, I don't see why some people use the argument that "weed is safer because it is a beautiful blend of hundreds of cannabinoids." Beautiful, you say? I say chaotic. Any chef would say so, too. With so many different cannabinoids, it's more likely that weed will contain some that are dangerous.