Zinc for the Treatment of Herpes Simplex Labialis (HSL)

Inclusion Criteria: * Subjects with a history of HSL with at least 2 episodes/year for the past two years that have proceeded beyond the prodromal (initial) stage * Male or female subjects between 18 and 65 years of age * Symptoms or signs of HSL for less than one day (max. 36 hours from onset of symptoms to first visit) * Confirmation of HSL by a clinician at the study site * Willing to comply with study instructions and sign an informed consent Exclusion Criteria: * HSL symptoms or signs for more than one day * Cold sore outbreak within the past 2 weeks * Previous participation in this clinical trial * Topical or oral antiviral drug use in the past 1 week * Immune deficiency (HIV positive), chronic steroid therapy, present anti-neoplastic or radiation therapy, Hodgkin's disease, splenectomy, leukemia, myeloma, lymphoma, or another condition/drug per judgment of attending health care professional) or currently taking immune suppressive drugs. Previous organ or bone marrow transplant. * Pregnancy or lactation * Unable to travel to the clinic area for the required visits * Apparent inability to understand or follow the instructions associated with the clinical study * History of adverse events to the study material or facial cosmetics