A friend of mine who is an artist has been finishing her paintings with oil based varethane fro several years. I am trying to wean her from this product and would like to steer her to the best non toxic clear finish. I have used some water based clears with very good results. What products do you recommend that would have a nice deep clear finish, offer Good UV protection and durability, as well as safer to use on a long term basis.

Thanks in advance.