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Paulaschoice has a 20% off all exfoliant sale
Free shipping over 100+ spend, sometimes has free shipping on everything with the 20% discount but that only happens like twice a year
Free 3 samples with $5 spend
UPDATE: (15-01-16)Also if you are subscribed to their mail they sent out an extra discount of 10-20% for use on the 15/01/16-17-01-16 best discount so far when stacked with this
Also using my referral link gets you $15 off $30 (referee and referrer) both receive $15.
http://goo.gl/n7PmYY