| How Anti-Fog Coatings Work
Anti-fog coatings prevent water droplets from forming on a surface by either absorbing the water into the coating or by sheeting the water across the surface.*
A water-absorbing coating acts like a sponge. It picks up water quickly in a dry state but eventually becomes saturated and no longer capable of picking up water. Like a wet sponge, coatings of this type become soft in their saturated state and are thus very susceptible to chemical attack, mechanical damage, and adhesion failure. Fog City products and Schuberth helmets uses this method. Wash with soap and water only!
A water-sheeting coating does not absorb water but rather spreads water across the surface of the coating, resulting in a transparent film of water. This sheeting effect comes as the result of highly hydrophilic (water loving) materials on the surface of the coating. Since coatings of this type can spread water into a film on a continuous basis, they will not water saturate and will not lose their normal abrasion resistance or chemical resistance properties.**
Make your own:
2 oz. white vinegar added to 1-quart water. Allow to dry on the inside of the shield.  |