Frank Skomial , Jul 30, 2006; 09:37 a.m.
I use Nikon's penbrush. One end is a soft brush and the other end has a most porous rubber type end that has air tight cap. Finger prints will require usage of the moist end, while dust can be removed with the brush. Perhaps the moist end does not use alcohol.
It is an inexpensive and small device handy for travel. I have been using one 3 years, and yet the moisted end has moisture it it, just have to keep it air tight when not used. I live on a desert land that is called Los Angeles with dry air and high temperature all year round. The pen could possibly last long in any environment, but eventually may need to be replaced by a new fresh one.
I am not sure about usage of alcohol. Sounds harmless for lens, but depending how pure it is, and what lens coating you have, that may not be the best solution ? Rather than not being sure, I would use a dedicated solution.