This Spray works better when cleaning the Anti-Reflective (AR) lenses, and it can be used for around a month, and all depending on what amount of time it is used, i.e., if used every three or four days it could last around two months, cleaning just one frame. If it is needed to clean several frames, we recommend buying the 6-bottles pack (you have to pick 6 Sprays), and so, take advantage of the shipping!
