The Toppik Hairline Optimizer was designed to achieve a natural looking frontal hairline. The Optimizer helps you frame the top of the face and the temple areas when using Toppik Hair Building Fibers. The irregular teeth allow Toppik to disperse only where it should, mimicking a natural hairline. This allows you to use less of the product while obtaining the most desirable results. You simply insert the teeth of the Optimizer into your hairline and shake or spray in Hair Fibers.