Don't give up on plain soap and water

New products like antibacterial soap and hand sanitizers clamor for our attention, but plain old soap and water is still a good way to clean your hands.

In studies, washing hands with soap and water for 15 seconds (about the time it takes to sing one chorus of "Happy Birthday to You") reduces bacterial counts by about 90%. But even people who are conscientious about washing their hands often make the mistake of not drying them properly. Wet hands are more likely to spread germs than dry ones.

Today, almost half of the hand soaps on the market have an antibacterial additive. The big question has been whether use of antibacterial soaps will worsen the problem of antibiotic resistance, said Dr. Jane Siegel, an infectious disease expert on the medical staff at Children's Medical Center Dallas.

"Even if antibiotic resistance weren't an issue, results from studies suggest that antibacterial soaps available to consumers don't add much to hand hygiene," Dr. Siegel says. "The findings are a useful reminder that antibacterial soaps aren't the all-purpose germ fighters that many people think they are."

The hot new products in hand hygiene are alcohol-based rubs, sold as hand sanitizers. The big advantage of these cleansers is that you don't need water or a towel, so you can use them anywhere. But alcohol doesn't kill everything. That's why it shouldn't be the only cleaner available in health care settings, Dr. Siegel says.

"To be effective, the rubs need to come into contact with all surfaces of your hands," she said. "For that reason, studies have shown that using small amounts is really no better than washing with plain soap and water."

Whether you're using soap and water or a hand sanitizer, be sure to:

1. Clean backs (of the hands, silly).
2. Clean fingertips.
3. Clean fingernails.
4. Clean thumbs.
5. Clean between fingers.

Tags: health , hygiene