Physically, I don’t think so; the main enzyme in saliva mainly digests starch, which humans are not made of

More likely, you’d drown eventually due to not being let out, which would be one of the crazier ways to die I guess, up their with that time when some nobles drowned in fecal matter

I’m pretty sure the primary enzymes in saliva are amalyse and lipase. They start to break down starches and fats respective. You’d probably needs something that breaks down protiens to have any effect on your skin.

Or be mashed into a pulp so the lipase could get to work…

If it were a pool of e-girl saliva I would willingly drown before the saliva could melt me.