Sephora is offering 50% off top skincare through 1/17. Today's offer is Sunday Riley C.E.O. 15% Vitamin C Brightening Serum for $42.50-$61 (regularly $85-$122). Sign in or create an account to enjoy FREE standard shipping with this purchase.

What It Is:

An advanced serum with plant saccharides and 15 percent vitamin C (THD ascorbate) to visibly minimize pores, brighten dark spots, and target signs of aging.