Anti-fog spray for visors and cross glasses Muc-Off Anti Fog is an anti-fog spray made with a groundbreaking, environmentally friendly and moisture-absorbing formula. The spray deposits a micro-fine and transparent film on the MX goggles or helmet visor, preventing fogging for up to 5 days. When sprayed on the outside of the lens or visor, Muc-Off Anti Fog also repels rain. The spray is biodegradable and can therefore be used with a clear conscience. For a clear view while driving If you often experience fogging on the inside of your helmet or goggles, Muc-Off Anti Fog is the perfect choice for you. The spray effectively inhibits the formation of fog, so you don't have to worry about obstructed vision on your scooter or motocrosser. Make sure to only apply Muc-Off Anti Fog on a completely clean and dry surface. Shake the spray and then spray a light but even layer on the surface. Wipe off with a dry cloth.