Brightening Face Serum for Dewy, Recharged and Even Skin. HLR Drops is a targeted serum packed with arbutin proven to effectively brighten dark spots, hyaluronic acid and niacinamide, two powerhouse ingredients which deliver rejuvenating hydration to the skin, licorice to treat post-inflammatory hyperpigmentation, and rosewater and aloe to soothe your skin. It’s a potent combination for improving the signs of photoaging and promoting dewy, recharged and even skin.