I used my new "Natural Wool Duster" from Zymol the last 2 days and I am sold. The fibers are so delicate, that its impossible to imagine that it could cause any scratches. The duster itself is so light that it seems impossible to apply too much pressure, which I found difficult with the Calif Duster. And no wax residue or streaking! It cost about twice as much as the Calif Duster, but if it lasts, which I believe it will, then its well worth the price, and its maintenance free.