Used 3-4 sprays only with great results.

Directions of use : Spray Aqualens Lens
Cleaner on front and back of lenses or surface and wipe dry with a clean soft cloth.

Aqualens Lens Cleaner advanced formula offers improved cleaning power. Its very safe and effective on all spectacles, lenses and coating, including anti reflective lenses. It can also be used on all electronic displays and screens.