How to make a lemon balm lip salve cold sore treatment

<p>“Grow Your Own Drugs” is a BBC series about growing and using natural remedies to treat a variety of ailments. It is presented by an ethnobotanist, who grows his medicine in his garden called James Wong and in one episode he discusses the healing power of lemon balm for cold sores and presents a recipe to make a lemon balm lip salve:

21 tbsp (approx. 50 g) fresh lemon balm leaves
3 tbsp wheatgerm oil
115 ml olive oil
1 tbsp honey
1 tbsp beeswax
5 drops tea tree oil

Check out full instructions for the lemon balm lip salve on the BBC website.