Do you often participate in some parades? Among the parade crowd, have you noticed that the parade personnel wear parade gloves? Just do the white gloves shown in the picture below.

The surface of human skin is covered with residue including oils, dirt, salts, and moisture. These can damage museum objects by etching, abrasion, and staining. Likewise, the surface of objects can be composed of, or treated with, materials of varying toxicity, such as pesticides.