To keep your cotton hat looking its best, spot clean it with mild detergent and lukewarm water whenever possible, gently scrubbing with a soft cloth to avoid fading. For a deeper clean, hand wash it in cool or lukewarm water with a gentle detergent, then rinse thoroughly. Avoid machine washing, as it can distort the hat’s shape. Always air dry, reshape the hat while it’s damp and keep it out of direct heat or sunlight to prevent shrinking or fading. Do not tumble dry. When storing, keep the hat in a cool, dry place and avoid crushing it; using a hat stand or lightly stuffing the crown with tissue paper can help maintain its shape. If ironing is needed, use a low setting and place a cloth between the hat and the iron.