Skimpy eyebrows can prove to be as much trouble if not more than thick eyebrows. Afterall, you can tweeze, wax, and shape thick eyebrows. However, if you try to fill in sparse eyebrows that are dark with a black, brown, or matching pencil you run the risk of looking like Groucho Marx! MarkdownMom has found a wonderful answer created by Mary Kay Cosmetics. The MK Signature Classic Blonde Brow Definer Pencil does what it states it will do. For $8.50 it fills in and defines brows creating a natural look. MDM uses this product and it even works well if you are older and your eyebrows are turning grey and you don’t want to dye them or go through a tatooing process, which can be dangerous. You can purchase this product from a Mary Kay consultant or online, or on Ebay, although availability and bidders can be an issue with any auction item.