Fast absorbing. Cold sore & fever blister treatment. Fast effective relief. Stops pain and itching. Moisturizes to promote healing. Patented penetrating formula. Many cold sore products are just moisturizers or waxes that sit on top of the cold sore. Cepacol Viractin gel has a maximum strength patented formula that actually penetrates the skin's surface to where it is needed. Begin applying Cepacol Viractin gel at the first sign of a cold sore. Its unique penetrating formula immediately begins to penetrate the skin to provide effective relief of pain and itching. Cepacol Viractin gel goes on clear and absorbs fast.