You can stack coupons online at www.ShuUemura.ca !
Good deal if you like their products or want to try them out.. They don't carry this brand anymore at sephora. But I believe Holt Renfrew does.
Found two coupon codes that you can apply and you can get 4% cash back with ebates!
If you don't have ebates, get it!! You earn money back for just shopping! You can check it out and if you want use my referral link below :D
http://www.ebates.ca/
Use Lightpurse for 15% off + Free shipping
Use Horse for 15% + Free shipping
You won't get exactly 30% off since the next 15% off is taken off your discounted total, but its pretty close!
You are only able to apply two coupon codes to your order, most of the codes out there are 15% off that i could find.
