When we heard that Sephora would be rolling out a weekly sale every Thursday, we got ridiculously excited. Last week's offers did not disappoint — several products with big followings were 50 percent off. This week, we are just as happy with the palettes, eyebrow kits, and antiaging face treatments up for grabs. They are half-off this time around, too! Check out these insane discounts, and make your purchases ASAP, as this sale only lasts one week.