First, make sure that you are applying the Deo to dry underarms and storing it in a dry location. Keeping the Deo dry will ensure it doesn't get sticky when not in use.
While using the Deo, make sure that you twist the stick back down after using. This will help it stay clear of the cap and its protective lining!
As always, if you feel like something is out of the norm, don't hesitate to reach out at help@usehuron.com.