Proactive Fogged Headlites

[bronsin]

My 09 headlites are pretty clear but someday they must start to go. Is there something easy you can do once a year to keep them from fogging? Like toothpaste or something that doesnt cost $$$?

The wifes 05 Camry is pretty far gone but Im too old and weak to buff them out for three hours + Im on a fixed income and $25 for a kit is a lot!