Our glasses lenses fog up “when warm breath escapes from the top of the mask and lands on the cooler surface of the lens”, making it difficult to see. There are several wipes, sprays and gels on the market to help prevent this. Most of the options we tested instruct the user to initially clean their lenses, so the products can work their magic. This encourages the water molecules to form a transparent layer, to intercept any chance of fogging. Factors we looked for included how quickly the lenses dried after this initial cleanse, our first reaction when putting both our masks and glasses on and for how long the results lasted. We believe this is the best product on the market to combat this.