Plastic only. I worked for MAC for 4 year.
If they accepted glass, you got lucky, it was either new person or you got someone who realy did not care about policy and was being extra nice.
But policy is to accept all plastic containers exept for sample containers and pencil caps. So your eyeshadows, mascara cases, lipstick tube etc. is great. Also you do know you can only choose lipstick. They will not let you coose lipgloss. :(
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Viktorija Bowers
makeup and hair artist
www.viktorijabowers.com