Rozenwald, head of beauty at the Bay, and who spends 50 percent of her time away on business, has come up with a clever way to address the carry-on conundrum: “I cherish trial sizes and samples of my favourites.” These include Estée Lauder Re-Nutriv Ultimate Youth Creme and Re-Nutriv Revitalizing Comfort Creme.

Rozenwald recommends accumulating trial sample bottles and jars during stores’ gift-with-purchase and other promotions. “And when they’re empty, you can refill them from a full-size jar. You just have to be careful not to use your fingers in the transfer process.” To avoid bacterial growth, Rozenwald advises using a fresh cotton swab or a spoon sterilized in boiling water.