Although it's already been said, I'll put in my 2 cents

I've used this product on food bowls that I personally use and have had
no problem. Since it's shellac based, I find no harm in it. Shellac
has been used for a loooooooong time, I'm sure someone somewhere would
have mentioned a problem with it by now. I suppose the only problem
someone will come across is if they have an allergy to shellac, which
I've never heard of, but possible.

Yes, the finish comes off faster than others. But, considering how
quick and (relatively) easy it is to apply, then it comes as no big
surprise.