How to Back to MAC

I've looked before the find the exact rules of how to Back to MAC and I couldn't really find any, so of course I got the full scoop and I'm here to share it with. Now I've done this quite a few times, but every once in a while I do still have questions as to what's allowed, and what exactly it intales. 

Back to MAC is an incentive program to receive a free item for every 6 FULL SIZE empty products you return for recycling. If your items are taken to a MAC counter you can exchange your empty products for a lipstick. If you go to a MAC store you can exchange for a lipstick, lipgloss, or eyeshadow. 

I have heard of some stores making a mark on your free item, and in that case it is not allowed to be returned as a Back to MAC item, but not all stores do this. Although, your free item is non refundable or exchangeable, so chose wisely :) 

So the main points to remember: 

-6 Full Size Items 

-Non refundable or exchangeable

-Counters = lipsticks 

-Stores = eyeshadow, lipgloss, lipstick 

I hope this helped! Please let me know below of there is something I missed, or maybe if you have had an experience you'd like to share.