Join Date: May 2006
Location: MYF/CMA/SAN
Programs: COdbaUA MM, AA EXP, AF G, Bonbon Gold, Hilton G, All G, GHA Titanium, Hertz PC, Avis Presidential
Posts: 5,929
Tons of cosmetic/hair related stuff is available in 100 ml sizes. Indeed, it is very common for cologne/perfume to be sold in 50 ml and 100 ml sizes.
As for the toothpaste thing, do the same thing I do for travel toothbrushes. When you go to your dentist every 6 months, just take the sample sized toothpaste and the toothbrush they give you and use those for travel. Ask for a couple extras of the sample toothpaste, which mine will always give me, and you are set.