Hi Paola, this is a sequence of 4 frequencies, each for 3 minutes. Therefore better to apply the whole 12 minutes for each eye or you can do 1.5 mins Left then 1.5 mins Right, then 1.5 mins Left then 1.5 mins Right, etc..
Hi Malik, with this IC you can apply IC Hummer in the area between and around the eyes. You can also gently apply IC Hummer on the closed eyelid. If that is uncomfortable you can reduce the audio volume to a comfortable level.