It helps if you cover them with clear coating having UV/IR reflectivity. Low E window tint fim designed for reflecting towards the non sticky side also. Like used on mini solar panels used to keep plastic from turning. Maybe if you coat stickers with the coating wiped on headlight lenses.I went the cheap route to put band stickers on my bumper but I applied clear gorilla tape over them and they have stuck for a couple months already with no problem. They just seem to be fading cuz they were cheap to begin with.![]()
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