My top coat is not drying. What could be the reason for this?

Your top coat needs the Activator to cure properly. It is therefore very important to always apply enough Activator before sealing your design with the top coat.

Also make sure to observe the waiting time of 2 minutes between the liquids.

Pro tip: If the top coat doesn't look good on your nails after a while, you don't have to remove everything straight away. You can simply gently file off the top coat, reapply Activator and seal the whole thing again with 2 coats of top coat.