Some tricks for applying under eye concealer include dabbing the concealer in and blending until there are no lines of demarcation between the concealer and the skin. Another trick for applying under eye concealer is to draw a triangle under the eye with the point facing down towards the cheek.
The under eye area is fragile and wrinkles easily, so be gentle and never tug or pull when applying concealer. Apply a thin layer of moisturizer under the eyes, let it set and blend the concealer using your fingertips. Use a light dusting of powder over the area after applying concealer to give a matte finish. Drawing a triangle of concealer underneath the eye is another trick that masks under eye circles and makes the face appear lifted.