This is my approach to finishing turned wood pens using Doctor's Woodshop Pens Plus.
Pens plus finish can be found here as well as through other vendors.
http://www.woodcraft.com/product/855499/doctors-woodshop-pens-plus-16oz.aspx
The eee ultra shine paste wax is a product I use often in various capacities. You'll see more of it in other videos that I do. Several vendors carry it. Here's a link to one of them:https://www.woodturnerscatalog.com/p/17/1536/U-Beaut-EEE-Ultra-Shine-Paste-Wax?term=eee+ultra+shine#ReviewsPanel
Both of these products last a long time.
Ask any questions below. Thanks very much!