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From a distance, it could pass for smudged lipstick, but up close, it looks painful— and even a little embarrassing. Cold sores are caused by the herpes simplex virus (HSV-1) and are spread by exchanging saliva with someone who’s infected.
Wear a high-SPF lip gloss or balm. According to Seattle naturopath Tamara Cullen, prolonged sun exposure can trigger flare-ups.
Lay off the chocolate and nuts. Foods high in arginine disrupt the amino acid balance in your body, which can aggravate the herpes-simplex virus (HSV-1), says Cullen. Cut back as soon as a sore appears.
