Guerlain Multi-Perfecting Concealer Hydrating Blurring Effect 02 Light Cool 0.4oz / 12ml Color correct your skin tone, hide dark circles and small imperfections, and create a natural-looking, flawless finish with Multi-Perfecting Concealer. It instantly blurs dark circles and imperfections while a treatment complex reduces the signs of under eye puffiness and hydrates overly dry skin.