If you're going to make it a habit to ride in wet conditions then a dry lube is not going to work. Dry lubes with teflon powder work OK as a lubricant but they do nothing for oxidation protection. For that you need good ol' oil. It takes very little oil to provide a rust protective film but it does require that you use SOME oil, grease or other film style lubricant that resists being washed away by water.