The Lens Cleaning Pen with Brush is great for cleaning camera lenses, binocular lenses, eyepieces, small-aperture spotting scopes and telescopes and other optical devices. The Lenspen cleaning tip is infused with a special invisible carbon compound that effortlessly cleans fingerprints, stains, and oily residue from your lens without the need of dirty solutions,tissues, or cloths, making it safe for all optics. The Lens pen comes with a retractable brush for removing dust and dirt before using the cleaning tip.