I keep a full set of toiletries packed in my suitcase at all times. This toiletry kit only comes out of my bag when I need to replenish supplies, and since I pack full size containers of virtually everything, this isn’t very often.
A good friend swears by a company called “Minimus” (www.minimus.biz) for locating individual sizes of almost everything. I tried packing the miniature or travel size items for about a year. For the occasional traveler, I think these smaller sizes are wonderful, but I was forever running out and forgetting to refill or repack my toiletry bag. The smaller size are handy, but I probably won’t make the switch for working. For pleasure travel, however, t’s all about packing light, and I'm always envious that her bag weighs so much less than mine.