Received it recently and been using the red light every morning for 15 minutes followed by the serum. Just learned though by another doctor that the green light is like walking under a canopy of trees or through a rainforest. The green affects the pineal gland, is very beneficial for harmony and balance so I’ll do that in the evening for 30 minutes. The more research I do, the more colours I’ll use. As a retired nurse I always knew about infra-red heat therapy for muscle injuries but this goes so much further. Research shows benefits for brain, vascular and neural pathway rejuvenation, ptsd, dementia and so much more. I know this company is not making these claims but research and scientific papers do. So exciting, I’m not only happy with the face mask but ready for a full body panels.