I bought 1 bottle of the fair, liked it, panicked that (like so many Q foundations) it would be changed in some way the next time it appeared - so bought a second bottle from eBay. One dropper works. The other just makes rude noises.
Horrified to discover that they were different colours! Bottle 2 was darker.
Then I wore it solidly for a week (bottle 1) before catching sight of myself in a mirror at work, and thinking 'yuk! Your skin looks like plastic'
Haven't worn it since.
Sigh. One of my MANY foundation disasters...