Tatcha Luminous Deep Hydration Firming Eye Serum The cooling serum of Tatcha Luminous Deep Hydration Firming Eye Serum ($85) is so lightweight, it can be layered under and over makeup. It uses red algae and caffeine to deflate the bags under your eyes. Image Source: sephora.com Tatcha Luminous Deep Hydration Firming Eye Serum $85 from sephora.com Buy Now