There has been a lot of talk about toxic chemicals used in painting, how they effect our health, and how we can do without them. I use walnut oil in the studio, but I still break out the toxics to seal off a painting and for some glazing in the final stages. When I use liquin, I go outside and wear a mask from opening the bottle to washing the brushes. This way it doesn't get me too bad. I would love to find a glaze that works well and is not hazardous.