Brand New in Box. Laura Mercier Flawless Fusion Ultra Longwear Concealer 5N Coverage That Won’t Crease Medium to full coverage flexes with skin to seamlessly conceal under eye darkness and facial imperfections. All-day hydration creates a crease-resistant, natural finish. Weightless Feel with Blurring EffectIncredibly - lightweight formula feels undetectable on skin, while the Blurring Powder Blend diffuses light to smooth the look of fine lines and create a soft-focus effect. 12 Hours of High-Performance WearPowered by Skin Fusion Technology - long-wearing flexible polymers fuse to skin for 12 hours of wear that’s transfer, sweat, humidity, and water-resistant.