Well... I placed the Pinlock on my helmet (ls2 stream 2 evo). I had never used an anti-fog Pinlock in the past. My personal opinion is that yes, it doesn't fog up. Yes, but...! At night, using the Pinlock made the glare of lights more intense and created a haze in visibility. Especially when the road was wet, etc... even worse. I kept the Pinlock on for over 3 months to see if I would get used to it but I didn't. As soon as I removed it, I could see better right away. I don't know if in another helmet, the phenomenon is milder. In my opinion, for someone who moves around the city at low speeds, where the helmet ventilation cannot work properly to keep the Pinlock clear, then yes. Put it on. But if you are on more open roads then... don't put it on. Finally, another negative point that I have not seen mentioned in anti-fog Pinlocks, is that by nature, the Pinlock cannot be cleaned... So if at some point there is a ring or some dirt (e.g. smudging), then this Pinlock cannot be cleaned simply with a spray and a cloth like one would clean the helmet visor.

Until I put it on the FF320 helmet, I saw and experienced. It is very tight on this helmet. The helmet has screws on the pinlock which I removed, but nothing turned as I saw in some videos to help the situation. With the on and off and the pressure it receives from the helmet's visor, the pinlock twisted on one side, resulting in it not fitting correctly and being slightly raised at the edge. However, it does its job and does not fog up.