I never used this before until about a month ago when I made a chipboard book and painted the outside of it. Then I put mad podge over it to make is shinny. This stuff is wonderful and I haven't even used very much. I must have coated it 3 times. I have a little pill size bottle that is 1/2 full from a class that I took and I haven't even made a dent in it. I guess I better go alter some more things!! This is the best product ever.