If someone watching is in a position to know if a screen cleaner that contains 2-Butoxyethanol as the main ingredient together with distilled water, anti-static [sic] & fragrance would be suitable and safe to use on a macbook retina screen the liquid cleaner is in a spray form the kit is branded as 'iGo' and has sat virtually unused for around 12 years. If there is such a viewer I would be very grateful if they could post whatever information they have. Respectfully John.