I'm not happy at all with this product- (Anti blue light filter for MacBook Air & Pro Macbook Pro 16"). On my initial purchase the double face adhesive was missing and Ocushield sent a replacement in 10 days which I recently received. The new screen however is so thick that it resembles an x ray film. I simply cannot see through it. It makes my screen 20% darker at the brightest capacity. I suffer from migraines and this screen just added to the optic stressors as it strained my eyes further. I might add that I purchased this screen for anti blue light protection only, not privacy. I believe that it's the privacy portion that makes it darker. That being said I was assisted by Sarah who was quite helpful initially and then she went radio silent. I'm still awaiting an answer and resolve. Fingers crossed as it seems that they only display positive reviews on their website.