Unlike ordinary hair sprays, Toppik FiberHold Spray's formula uses sophisticated alpha grade resins to join thinner hair and Toppik Hair Building Fibers naturally and durably keeping Toppik in place in wind, rain and perspiration.. Pro Vitamin B5 and naturally derived ingredients soften and condition both hair and fibers optimally for a completely natural appearance. pH balanced to 5.5 for optimum results with Toppik Hair Building Fibers. You may even brush after drying for a softer style with ample fiber-holding power.