Product Boxes or Shipping Boxes? I get rid of the shipping boxes, like outside packaging unfortunately no recycling program here so I either reuse them for something else or they end up in the trash/as a fire starter in the summer.
Product boxes? They're all collapsed and put into elastic bands, I think you're suppose to keep those to B2M when you finish a product, i thought you had to have the box it came in to B2M it...? I got rid of the first ones I had not realising that but I have a whole cupboard full of collapsed boxes from my mac shadows/blushes to search through in the unlikely event that I ever actually use up an entire product. lol
I've been using MAC for 2 years now, and I have enough makeup to last a lifetime the only thing I will ever actually use up is foundation/powder, I have so much different stuff. I guess I will be able to B2M stuff when I accidently put it through the washing machine (has happened more than once!! luckily both times I caught the lipstick before it went into the dryer. That would have been horrible for my clothes, for my dryer, for my heart lol).