The phot r lens cleaning pen is an essential 2 in 1 accessory for removing dust smudges and oily finger prints from your lenses the lens cleaning pen gives you everything that you need in a small lightweight safe easy to use pocket pen firstly remove the dust from your lens using the retractable lens cleaning brush made from soft bristles then use change over to the opposite side of the pen where the tip contains a special non liquid compound to clean your lens simply apply gentle pressure