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Cold sores/fever blisters (herpes simplex virus)

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A common viral infection is cold sores, also called fever blisters. They are tiny blisters on and around your lips that are fluid-filled. In patches, these blisters are always grouped together. A scab forms after the blisters crack, which can last many days. Without leaving a scar, cold sores usually heal in two to three weeks.


Cold sores transmit by physical contact, such as hugging, from person to person. They are typically caused by type 1 herpes simplex virus (HSV-1) and less often by type 2 herpes simplex virus (HSV-1) (HSV-2). The mouth or genitals may be infected by any of these viruses which can be transmitted by oral sex. Cold sores are infectious, even though the sores are not noticeable to you.

cold sore

Treat cold sores/fever blisters with essential oils

If you have a cold sore around your mouth or feel that one might be coming, put 1 drop of geranium oil on a cotton swab and apply it directly onto the sore. Repeat several times a day. Also, apply the following body oil over the whole torso, including the neck:

Basic blend for cold sores / fever blisters

Geranium 10 drops
Lavender 10 drops
Thyme linalol 2 drops
Lemon 8 drops

Dilute the above essential oils in 2 tablespoons (30 mL) of carrier oil, and use about 2 teaspoons (10 mL) of the blend per application.

Alternative blend for cold sores/fever blisters

Eucalyptus radiata 8 drops
Tea tree 2 drops
Geranium 10 drops
Ravensara 8 drops

Dilute the above essential oils in 2 tablespoons (30 mL) of carrier oil, and use about 2 teaspoons (10 mL) of the blend per application.


Although pure melissa essential oil is very expensive, it’s extremely effective against herpes simplex and is prescribed widely in Europe for this purpose. It can be applied directly to the affected site and may assist in reducing the severity of the outbreak.

Other Essential Oils That Could Be Used to Treat This Condition: *melissa (Melissa officinalis), *chamomile german (Matricaria recutita), *rose otto (Rosa damascena), *cedarwood atlas (Cedrus atlantica), *ho wood (Cinnamomum camphora ct. linalool), *hyssop decumbens (Hyssopus officinalis var. decumbens), *palmarosa (Cymbopogon martinii), *fragonia (Agonis fragrans)

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