Herpecin L Everyday Protection helps relieve and protect against cold sores fever blisters and chapped lips. Herpecin L Everyday Protection helps protect against common cold sore triggers such as UV exposure skin damage and cracked lips with its unique formulation that includes skin protectant sunscreens and a natural complex of lysine lemon balm and vitamins And if you do have a cold sore Herpecin L helps promote healing of cold sores without numbing or drying. It soothes and locks in moisture to prevent painful cracking and relieve chapped lips. And it creates a SPF 30 barrier to protect your lips against the sun s harmful UV rays. It s not waxy making it easy to apply.