After Christmas is definitely a time to get bargains. As with prior years, Sephora puts the offerings on their sale page with an additional discount of 20% off. This year's code is EXTRA. Now would be a prime time to get some of the holiday gift sets if you have some spending money after tomorrow morning.
Don't forget Ebates which is currently at 8% cash back!
Disclosure: Ebates link is a referral link.