Since it's spring in Colorado, yes despite the snow it is still spring, we thought we should talk about fibers that you wear in warmer weather.Cotton is great but it isn't the only wearable plant fiber. Fibers that come from trees and grasses are also great options...
Why do yarn labels ask you to wash wool or cotton with vinegar/salt the first time?
This fixes the color to the fiber. If you don't want the color to run or fade you should follow the manufacturer's instructions. Always rinse until the water runs clear.