Can I use creams or oils during biosensor wear? Please avoid using skin creams and oils around the application area while wearing a biosensor. These can leave residues on your skin which may make your biosensor come off early. Related to Wear Related articles Can I still use a biosensor after it expires? What battery is in my biosensor? What do the glucose graph colours mean? How do I recycle or dispose of my biosensor? What’s included with my Lingo subscription?