Pinlock visor fogged from the outside

Hi, I don’t know if the question is right here, probably not, but I didn’t find a suitable section right away. I’ve had a new first scooter for 3 weeks. Of course a new helmet. I bought a pinlock extra because of the cold days. It’s definitely with the silicone lip everywhere. But it can’t be that. Because the pinlock is banging from the outside. So on the side that is facing my face. Vllt it was a mistake, the visor as a Seek to clean the pinlock with isopropanol. However, since I am a neurodermitist and always have some grease cream on my fingers and when using it inevitably lands on the pinlock, I cleaned it with isopropanol. Several times, because I had to re-use the pinlock several times. Anyway, the pinlock constantly attacks. Predominantly on the left side. The right side remains relatively spared. What can I do? What is it about? I am also surprised that it is mainly on the left side And that extends from the centre of the left.