I've had mine for years and it has seen use (with an entire family of blue eyes!). I have discovered that less is more. And you need to "dab" rather than "write". If you use too much you end up with a green eye (imagine a cat's eye in a flash photo) or a weird look. It has a very fine tip and I usually use just the very point of the tip for best results. I try to fix red eye in Picasa whenever I can, but I sometimes forget and order the photos without fixing them....................P