Sephora Collection Ultra Glow Serum: Glow + Strengthen Vitamin C Serum The Sephora Collection Ultra Glow Serum: Glow + Strengthen Vitamin C Serum ($20) can make skin bright — and keep it that way. With more than 33,000 loves at Sephora and 97-percent-natural ingredients, the vitamin C serum adds things like marine algae to tighten skin and vitamin E to block free radicals. Image Source: sephora.com Sephora Collection Ultra Glow Serum: Glow + Strengthen Vitamin C Serum $20 from sephora.com Buy Now