Sealer over acrylic painting on canvas.
What type of sealer is best to use over acrylic painting on canvas? I have tried many different things and some dry tacky and some will seem dry but will stick to other paintings if stacked next to each other and some show circles from bubble wrap when mailed. I have asthma and am trying to get away from using the spray acrylic sealers because of the fumes. Do you have any idea of a good product to try? Thank you in advance.