I have very sparse, thin brows. I use a combination of brow pencil to fill in those bald spots only, and color in the rest of my brows with an eyeshadow that matches my haircolor applied with a small, stiff angled brush. Completely coloring in your brows with pencil looks too dark and unnatural, and using eyeshadow alone isn't enough to cover bald areas so it's best to use a combination of both. Remember, very LIGHT featherlight short strokes during your application!!!