ProFormance Online Certification Class. This class covers 5 basic square extensions using Trinity 3-in-1 and Balance Foundation Blush and Balance Warm Pink, Enhance and Balance Nude. This class is available for 6 months after the purchase date To access the class log into your profile and click on my classes. Once you purchase the class you will need to email us at sales@tpnnailsupply.com with your shipping address so we can send out your kit.