Watch Spray Foam is a safe and easy to use watch cleaner that helps preserve the factory finish of your watch. Some watch cleaners contain naphtha (a flammable petroleum product), solvents, and alkaline chemicals. On the contrary, Watch Spray is water-based, pH neutral, Chlorine free, and contains no heavy metals. It is safe for all metals and crystals, including anti-reflective lens. Unlike soap, it is also glycerin free ensuring that the finish of your watch is both smooth to the touch and film free. Enjoy the best and keep your watch beautiful!