I buy cans of it from Ace Hardware, but can't recall the name. The can is red and gold.

It works, but takes multiple applications. Also helps if you rough up the top surface with sandpaper or a wire brush first. Sometimes when it's sitting there slowly doing it's thing I will take an exacto knife or a pick and help loosen it up.

The stuff has changed for sure. I can remember using it to remove paint from bmx bike parts when I was a teenager and the paint would start to lift the moment the stripper touched it. Today's stuff is just weaker, or the paint ingredients have changed.