Artificial diamonds are a very hard abrasive. May leave noticeable marks on mirrors or glass material depending on usage conditions. / Do not use on uneven surfaces, obscured glass, surface-treated items such as glass, mirrors and sanitary ware, automobile windows, glasses, lenses, etc. / May not remove grime that has been left sitting for an extended period of time or that is caused by compounds, penetrating oil, water quality, etc.Test it first in an inconspicuous place.Do not rub too hard.Use and keep out of reach of infants.Keep away from fire and other sources of heat.Do not use this product for purposes other than its intended purposes.