Troubleshooting How do I clean my Philips Lumea? If you would like to know how to clean your Philips Lumea, please follow our simple instructions below. Cleaning instructions for Philips Lumea Switch off and unplug your Lumea. If possible remove the attachment from the light exit window. Use a soft, moist cloth to clean the following parts The light exit window The outside surface of the attachments The reflector inside the attachments The reddish filter glass inside the facial attachment.