I like the baby powder idea. I will give that a try this week. Previously, I try to make sure I'm wearing gloves and long sleeve shirts on composite days to avoid contact with the fibers. If I forget, I always step outside with the air hose and blow off my hands and arms before washing with cold water. If you get the itch, its too late and the next few days are gonna suck. However, yesterday I was talking with my neighbor about this since he builds and repairs wind turbine blades. He says you can use baking soda and water to make a paste and apply to the itchy areas. Once it dries, lightly flake it off and most of the fiber particles go with it. Then rinse the rest off with cold water.
This is a good topic Superjet-113. Keep the ideas coming.