Apply 1-2 coats of your favorite nail color over nails. No base coat necessary, then follow with CND Vinylux Weekly top coat. A base coat will negate the performance of VINYLUX because the adhesives are in the color coat. Vinylux has adhesion promoters in the color coat making the color self-adhering without a base coat. Reapply the top coat once per week to maintain long-lasting wear!