Place your nails under a UV light for 1 minute to cure the primer. Since a UV light is the only way to truly cure the gel polish, you'll need to simply let the nails dry if you don't have the light. Let the nails dry for 25 to 30 minutes before applying another coat. If you like, you can finish with a top coat to protect the gel nails.

Summary:
Cure your fingernails for 1 minute under a UV light. Dry the nails completely under UV light for 3 minutes between coats.