R&G Nano Coating
£10.99
www.rg-racing.com
Not specifically designed just for visors, the R&G Nano Coating can be used on all bike surfaces, according to the bumf. There are no warnings printed on the bottle — neither health nor flammability — and the product has no discernible odour when applied. We used two layers as per the instructions and polished it off using the microfibre cloth supplied. When hit with the water, it proved better than the untreated side but only marginally — the water run-off seemed slow compared with some of the other products, though not the slowest. It took four hits with the pressure washer before its effectiveness was reduced and it performed no better than the untreated side of the visor.