Pashmina shawls should not be ironed. Ironing can cause damage to the fibers, as well as shrinkage or loss of shape. The heat from the iron can also cause the fibers to lose their natural sheen and lustre. You can use a warm iron to press the shawl, but you need to place a thin cotton cloth over the shawl and press it gently to avoid direct contact with the iron. It's always best to be safe and avoid ironing your pashmina shawl altogether and instead opt for other ways to remove wrinkles and restore their shape and appearance. You can use a steamer or hold it over a pot of boiling water while gently pulling it back into shape.