Promaster OpticClean レンズクリーナー

I keep one in every camera bag—the squeeze bottle is so compact that it's easy to stash. Works perfectly on my eyeglasses too, not just lenses.

This little bottle saved my lens after I accidentally touched it with a greasy finger—no streaks at all after one quick wipe. The compact squeeze bottle fits perfectly in my camera bag’s front pocket so I always have it handy.

Been using this on my camera lenses and my glasses, and it doesn't leave any streaks or residue. The squeeze bottle lets me control exactly how much comes out, which is nice for smaller spots.