Do not pick or squeeze the cold sore, as this will cause scarring and delay healing.4% Stannous Fluoride, Glycerin, Zinc Gluconate, Xanthan Gum, Purified WaterCaution: To avoid spreading the infection, always use a disposable cotton swab to apply cosmetics to an unhealed cold sore. Ingredients: 0.Cold sores are a painful annoyance.