Bead Maker may be applied to wet or dry vehicles and is safe to spray all exterior surfaces. Bead Maker also does include UV Protection - we use a combination of a UV filter and UV stabilizers. What makes Bead Maker different is the surface migrating molecule that attaches to the paint surface of a vehicle. Once attached this molecule cross-links and polymerizes on the surface thus building a hydrophobic durable layer of protection. Cure time is essentially two hours depending upon ambient conditions.