Can I use creams, oils or sunscreen 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? I get the error message ‘Your biosensor ended early’ How do I dispose of my biosensor?