That's ethylene glycol, also used as antifreeze. It is metabolized to oxalic acid, which in quantity destroys the kidneys. Propylene glycol metabolizes into lactic acid. Too much of that causes CNS depression or acidosis. It's often chosen as a safer alternative to ethylene glycol.
Apparently in rats it didn't hurt them to pour it in their eyes.
The safety instructions for most of the exposures boil down to "rinse it off you."
Also: "After swallowing: make victim drink water (two glasses at most). Consult doctor if feeling unwell."