The recommended 30 minutes is only a minimum wait time and actually the longer you let it sit, the better the results will be. That also goes for the 6 hour cure time. The longer you wait for the Liquid Wax to harden and cure, the better the results you'll get. We recommend 6 hours, but you can even wait a full day. Just make sure no moisture hits the paint during the curing stage as that can have an affect on the longevity and performance of the product.