Clear Acrylic Sealer Aerosol Spray 12oz-Matte

I am an artist and I was led to this product years ago when I had to have a spray that would enable me to seal something painted with oil paints in one area of my work. This worked! Since then, among other uses, I've used it to fix an underdrawing for another oil painting so the graphite wouldn't pick up through my paint. It's of very high quality and has never yellowed on my work and is much better than the brand we used when I was studying art at the university. I was so glad to find that I could get it at Walmart instead of having to drive. Now I find I have to order it online at Walmart too but they still have the best price for it.