I know this is not a deal available to everyone but if anyone is flying easyjet or knows someone who is then you can take advantage in their offer
from 4th-24th of December easyjet are offering 20% off all boutique purchases. Some bargains to be had e.g:
Benefit they're real mascara: £13.20
Tangle teaser compact: £8.00
Flowerbomb 50ml EDT: £35.20
hope this helps anyone flying out so you can already decide if what you are buying can be found cheaper!