I am a common "poo-pooer" of bad submissions on here, and comments not in good faith
But this paper taught me something I had no idea about as a 33 year old. Also in the comment chain someone mentioned/brought up using peroxide/sunlight to clear up old yellowed plastics which is....monumental to some of my projects :)
Be warned though that retr0brighting is an art. If done unevenly it looks worse than before.
rushes outside to undo the hasty application/test I did on my old miata soft top plastic
ty, too much coffee this morning