Gently hand wash it in cold water using a mild detergent, being cautious not to use hot water to avoid damaging the delicate silk fibers. Allow the headscarf to soak briefly, but avoid excessive soaking to prevent color bleeding or fabric damage. Rinse thoroughly under cool running water, avoiding wringing or twisting to prevent stretching or distortion. Afterward, pat dry the headscarf with a clean towel, removing excess water without using a dryer, which could harm the silk fibers.