The patented TOPPIK Spray Applicator enables precise application of TOPPIK Hair Building Fibers into focused areas of thinning. Using the Spray Applicator makes it easier to disperse the fibers uniformly, so they look even more natural. Ideal for the front hairline, especially when used with the TOPPIK Hairline Optimizer. Fits both the 0.42 oz. and 0.97 oz. bottles (does not fit the 1.94 oz. or 0.11 oz. size bottles).