Manuka lip balm - Cares for lips affected by herpes Manukas lip balm, with its natural ingredients and active substances such as organic jojoba oil, organic olive oil or organic shea butter, can help to provide the lips with rich moisture and intensive care. It also contains valuable ingredients such as vitamins C and E, and essential manuka oil. This can have a positive effect on the healing of cold sores*. The lip balm should be applied at the first sign of a cold sore. *Source: Reichling J, Koch C, Stahl-Biskup E, Sojka C, Schnitzler P:Virucidal activity of a beta-triketone-rich essential oil of Leptospermum scoparium (manuka oil) against HSV-1 and HSV-2 in cell culture. Planta Med. 2005 Dec;71(12):1123-7. Institute of Pharmacy and Molecular Biotechnology, Department of Biology, University of Heidelberg, Heidelberg, Germany