Very effective 85

The side with a carbon compound is radical to clean traces on the objective lens, it leaves no trace, contrary to what some have feared (the surface of a lens is much smoother at the microscopic level as fingers , the carbon particles do not adhere to glass). However, it will leave traces on your fingers and light-colored clothing, so avoid touching it.

Note that a "buffer" in the end cap enables to reapply the product on the applicator, remember to turn it a quarter turn after putting the cap.

The applicator is concave, it is ideal for lenses. However, it seems to me much less effective on filters, making them perfectly flat surface with the applicator surface area is reduced. This works, but somewhat less effective.

Of course, to be used only if the "pear" is not sufficient.

Small problem: simple instructions on the back of the package would be a simple and convenient addition.