Specifications: - This precision instrument allows you to spray on, rather than just shaking it - The Spray Applicator gives you precise coverage just where you need it, in any thinning areas - The Applicator is perfect for filling out your front hairline - For best results, use it with the Hairline Optimizer, The natural static charge of Hair Building Fibers creates a strong bond between the Fibers and your hair, and you can get even greater durability by using Fiber Hold Spray Features: - Use with sevich and toppik Hair Building Fibers for complete, natural coverage - Improves the results of hair with more precise coverage - More controlled, precision application every time - Great for targeted application in specific areas - Fits 12g-27g bottles Note: this is not a Toppik branded item, it is compatible with Toppik bottles