Just tried Krylon UV-Resistant Acrylic Clear Matte on my RG Freedom. I was expecting a lot worse! Some areas where laid on thick but that's from my own bad spraying pattern. :
Amazon.com: UV-REST CLEAR MATTE 11OZ : Tools & Home Improvement
Uv-resistant Clear Matte Coating Varnish Sealant Krylon K01309 Gallery Series Artist and Clear Coatings Aerosol Spray, 11-ounce - Etsy UK
Krylon UV-Resistant Clear Gloss - YouTube
Overjoyed - Are you wondering how to protect your finished artworks? - Try out the @krylonbrand UV-Resistant spray today! - It is a clear finish that protects the surfaces from damaging UV
Krylon UV-Resistant Clear Gloss - YouTube
Krylon UV Resistant Finish – Rileystreet Art Supply