Hello, the fabrics used in our products, which contain 47% Modal, 47% Cotton and 6% Elastane, are produced by passing international standards of color fastness tests. Even at 30 degrees, the content of the detergent used (those containing bleach/optical brighteners) or other products washed together can cause such unexpected situations. We would like to express our regret for this situation, which is caused by use/washing, as such color loss is impossible under normal conditions in our fabric, which is produced in accordance with standards.