The perfect subject, but when developing, you realize that a speck of dust has marred the image. The Lenspen reliably removes the smallest dirt particles from lenses and filters. This way, next time you'll capture something with the perfect subject! Particularly durable, as no liquid can dry out or leak during dry cleaning. Ready to use immediately, as the screw cap ensures the automatic activation of the velvet surface, so no extra activation of the fibers is necessary.