I just have a paint sealant on the for the time being till it gets a little warmer and i can seal them with UV Sealer-Helmsman Spar Urethane(Indoor/Outdoor)Clear Gloss mixed with Mineral Spirits(1part urethane to 1 part mineral spirits. Ive heard of people having real good results using this method so i am going to give it a shot on my lenses.