To help reduce flushing, I apply cucumber slices directly to the flushed skin. I use English cucumbers, peeled and sliced very thin. The thin slices conform to the skin contours much better than thicker slices. I apply the cucumber and leave it in place until nearly dry. Cucumber has a cooling effect that seems to exceed the effect one would expect from moisture alone. I keep a small container in the refrigerator and take one along when traveling. I pack a small paring knife in a checked bag when flying.
— U. Macmillan