Now you know why mechanics wash their hands before going to the toilet. Something may be itching a while otherwise...
Skydrol is very irritating and slippery, but not nearly as unhealthy as engine oils and other greases we use on daily basis.
It can cause serious damage to your body if you are exposed to a stream of 3000PSI, that's the same as a waterjet cutter.
I also ask myself how they dispose of waste hydraulics (it looks like a brown smudge after it's been used).