Caring for a sheer blouse depends solely on the type of fabric from which the blouse is made. Organza blouses: Many blouses made of organza can be hand-washed, but some should be dry cleaned, so be sure to check the label. When hand washed, the piece should be laid flat to dry away from direct sunlight and heat. Steam irons can be used – carefully – for wrinkles. It's also important to keep the blouse away from zippers or anything else that can catch the fabric. Chiffon blouses: Silk chiffon blouses need to be dry cleaned. Other types of chiffon can be hand washed or washed in the machine on delicate settings with mild, gentle detergent. Chiffon cannot be left in water for more than a half-hour, though, without the risk of losing the dye. Avoid sunlight and wringing, and always lay chiffon flat to dry. Lace: Lace can be made of various fabrics, each requiring different care. Knowing the type of fabric is the key to caring for lace, and it should always be handled very delicately and gently. You should also take care to keep lace away from anything that may snag the fabric, and it should be laid flat to dry with no wringing.  Tulle: This delicate fabric should be washed by hand in cool water with mild detergent. Air drying by hanging in an area with adequate ventilation is key. To prevent wrinkles, tulle should be stored by hanging, and it should never be wrung. It's also important to keep tulle away from things that may snag against the fabric too.