Back-2-M·AC is the company’s program that incentivizes customers to recycle MAC containers and awards them with a free make up item (mainly a lipstick) of their choice.
So here how it works. You return 6 empty MAC products (not the boxes they come with) and you get a free lipstick of your choice. Actually they don’t have to be empty, if there is a product you don’t want it anymore you can “back to MAC” it. In some places (MAC stores not counters in the US, not in Europe as far as I know and I have no idea about the rest of the world) you can get a lipstick or a lipgloss or an eyeshadow.
You can return containers from: lipstick, eyeshadow (all kinds that come in pots), lipgloss (all kinds), blush (powder, cream, mineralize), concealer, foundation, cream color base, paintpot, fluidline, paint, mascara, pigment, powder (all of them), liquid liner, shadestick, primer (anything from the prep+prime line), lip conditioner, makeup remover, face/eye cream, face wash, cleanse off oil, brush cleanser, fix+. Also limited edition quads, trios, duos and palettes. That’s all, I think.
I was recently told (by a MAC employee) that you cannot return retractable liners and the cases of false lashes any more, but honestly I think it’s kind of weird. She might be wrong.
You cannot back to MAC travel size products. Nor can you the pump you get extra for MAC foundations.
The products that are eligible for back to MAC have a “Back-2-M·A·C” sign on the paper box they come with.
You cannot get a Viva Glam item or an eyeshadow in the pan form (for palette).