To cover dark circles caused by tired eyes, the first tip is to use a concealer that gets the job done. The Neutrogena HealthySkin Brightening Eye Perfector is a great go-to because of its lightweight liquid formula that makes it great for layering. Step 1: Start by applying concealer to the upper eye area in a backwards C formation. Step 2: Pat with ring finger. The heat from your finger will help blend the product seamlessly. Step 3: If you need more coverage, repeat this step until you see no more dark circles. Follow our ‘How To’ series for more everyday makeup tips!