Without intending to start a new thread, I recall a passage attributed to Norman Rockwell. Being an illustrator (gasp) under deadline he could not wait for layers of paint to dry. What he apparently did was spray varnish multiple stages of his work; paint, varnish, paint, varnish, etc. He was told by his contemporaries that his paintings will likely explode.
Well, I don't know how archival ol' Norm's works will be, but they show no signs of detonating to date (that I'm aware of).