On most daily-driven vehicles, carnauba wax lasts about 4–8 weeks, and it could be less.
Wax does have benefits: it can hide light paint imperfections and give a deep, warm gloss. It does have its limits though:
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Cold temperatures: When temps drop below ~35°F (2°C), wax can develop micro-fissures. As the vehicle’s metal expands and contracts with temperature changes, the wax breaks down and loses its protective ability.
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Heat: Carnauba wax begins to degrade around 150°F (65°C). Vehicle hoods can easily reach 160–180°F in summer, which accelerates wax failure.
Because of these factors, wax protection is short-lived—especially if the vehicle is exposed to weather year-round. To maintain protection with wax, you would need to apply it weekly or very frequently.
Better long-term options
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Synthetic sealants: Typically last 2–6 months
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Ceramic coatings: 1–5+ years, depending on the product and how well the surface is maintained.
If you’re looking for longer term protection vs a few weeks then a synthetic sealant or ceramic coating is a much more durable and reliable choice than traditional wax.
