Yves Saint Laurent Pure Shots Light Up Brightening Serum The Yves Saint Laurent Pure Shots Light Up Brightening Serum ($88) features a stable, water-soluble vitamin C that easily seeps into the skin and works to improve its overall tone, plus targets dark spots in particular. This new serum also includes marshmallow flower, which fights free radicals and further soothes visible signs of irritation — and it's already earned a 4.4-star rating from other Sephora shoppers. Image Source: sephora.com Yves Saint Laurent Pure Shots Light Up Brightening Serum $88 from sephora.com Buy Now