While I have not been able to use this yet……..because the sun just appeared here in buffalo NY, I am excited to try it! The sun is out and I feel better so I hope that I have the same results as soon as we lose sun for 8 or 9 months in fall/winter,,,:( I DID call and ask it to be documented that I did order this sooner than I expect to need it and I have high hopes in it being positive for me! Can't wait to try! Customer service was incredibly friendly!!