To avoid being infected with HSV-1, you should take the following precautions around people who have cold sores:
If you’ve already come into contact with HSV-1, do these to reduce risk of a cold sore outbreak:
Wear lip balm with SPF: Protecting your lips from sunburn can help you avoid an outbreak.
If you have a cold sore, be careful around babies. Always wash your hands, and do not kiss a baby until the cold sore has healed completely.