Please do not clean LED by unknown chemical liquids, as unknown chemical liquids may damage LEDs. If cleaning is necessary, please immerse LED in alcohol for less than 1 minute under room temperature. Let LED dry naturally for 15 minutes before use it. Do not clean or wipe LED LENs by organic solvents such as acetone, Banana oil, which will corrode epoxy, damage inside structure , the contact area of gold wire and chip, leading abnormal light .