These false eyelashes do not live up to MAC's reputation. Like most eyelashes they come already in a semi-circle shape in the box, you peel them off, add glue and stick them on. But unlike most brands the shape that they are in the box is completely unchangeable. So unless your eyelid was the exact roundness of this package there's no way you could wear these.
My eyes are pretty close, and these are seriously overpriced, so I decided to make the best of it and try desperately to put them on my eyes anyway. I would consider myself an absolute professional at false eyelash application, I wear single lashes and full set lashes absolutely EVERY DAY and it took me more than a half an hour to get these onto my face just because they were so stiff and immovable.
Once applied, they feel heavy and inflexible. If you've warn falsies before you know that you shouldn't be able to feel them when they're dry. If you look too far in any direction, squint, or blink hard the corners stab into your eyelids.
I'm assuming that all of these problems are caused by the lashes being synthetic and not actual hair. They appear to be plastic.
Unfortunately after all that work this particular set, #41 is actually shorter than my natural lashes so it has given me no aesthetic benefit anyway. That really isn't anyone's fault though as someone else purchased these for me, but you should know if looking at this set that the lashes are very short.
Overall these are equal in quality to the $2 metallic plastic pairs you buy at a costume shop for halloween. Fun in theory for one day. So as usual I have to say, don't shop big name brands. It's a huge rip off. Stick to your drugstore falsies.