This super-concentrated treatment concealer features a micro-corrector applicator to help instantly erase dark circlesStep 1. Twist collar of the Micro-Corrector Applicator in the direction of arrows until the concealer is visible on the sponge (it may take some turns on first use). Step 2. Using the applicator, apply concealer directly to the under-eye area, blending in an outward motio Step 3. For extreme dark circles, apply the Neutralizer shade under concealer shad Step 4. To add a luminous touch, apply the Brightener shade to the inner corner of eyes, cheek and brow bones and, bridge of the nose.e.n. and fine lines.