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Hand gel has been all over the news recently. Last week a study appeared discussing hand sanitizer technique--apparently it matters (I'm looking for that link). A bit appeared this weekend about the growing recreational use of alcohol-based gels in prisons (my search for Purell Appletini actually yielded something). And there's a new nicotine hand gel on the market (PubMed searches reveal no research on the stuff).
Makes me wonder what can't be delivered with a little gel?