We recommend cleaning the sensors using a Q-tip soaked in General Purpose Contact Lens Solution (such as ReNu) which contains a mild antimicrobial. After cleaning, wipe over the sensor with a clean Q-tip soaked in household glycerin. Make sure you clean only the polymer sensors and immediate surrounds with Lens Solution and glycerin, and make sure not to leave a wet track between the two reference sensors on the black Reference arm (behind the left ear).
The remainder of the Insight headset can be cleaned using household wipes. Try not to contact the polymer sensors with the wipe