Reapplication
If you ever feel the need to top up the Under Armer, you'll find the process similar to the initial application. You can usually tell that the protection is fading if the surfaces aren't hydrophobic anymore. Make sure to clean and dry thoroughly before applying.
If there are still hydrophobic properties, the Under Armer only needs 15-30 minutes cure time as it will bond well to the surface left behind by the previous application.