Written by Jennifer D’Souza, 23.07.2019

Cold sores are contagious; they spread through close contacts, from individual to individual. A herpes simplex virus (HSV-1) which is strongly related to that virus which causes genital herpes (HSV-2) tends to cause fever blisters. HSV infection cannot be cured, and the sores may come back. Antiviral drugs can assist cold sores to get reduced faster and decrease how frequently they come back.

Statistics demonstrate that between 50% and 98% of the adult population in the US is affected by the HSV-1 virus.

Essential Oils for Fever Blisters

Peppermint Oil

Peppermint oil is yet another essential oil that can effectively kill an activated virus. An HSV laboratory study indicates that peppermint oil could relax the signs of an active herpes strain – even the stresses that are resistant to other types of medicines.

At the first indication of a fever blister, apply diluted peppermint oil straight to the cold sore if you want to seek the best outcomes. Take small amounts of peppermint oil for the application. Do not apply in massive quantities.

Tea Tree (Melaleuca) Oil

Tea tree oil has characteristics that are antiviral, anti-inflammatory, and antiseptic. If you want to treat a fever blister, then these properties are essential. A study of the skin disorder regarding the uses of tea tree oil discovered that it had a powerful antiviral impact on HSV.

By using a clean cotton swab, you can use diluted tea tree oil on your cold sore directly. Ensure to dilute it by using a comparatively softer “carrier” oil, like coconut oil and jojoba oil.

Do not use tea tree oil for fever blisters multiple times a day; otherwise; else it may irritate your skin. Prefer using it twice a day.

Oregano Oil

Oregano oil is one among the most common home remedies available for cold sores. The impacts of oregano oil on the HSV were discovered to be noticeable back in the year of 1996.

Rubbing the diluted oregano oil with the help of a sterile piece of cotton gauze on your cold sore can assist in reducing its size and irritation. It will also help cure it faster.

Avoid using more significant amounts of Oregano oil on your cold sore.

Anise Oil

According to a trusted source, it is clear that, for preventing cold sore infections, anise oil from the anise plant is highly useful.

Apply the anise oil directly on the affected area of your cold sore.

Use smaller amounts to avoid getting any skin inflammation.

Thyme Oil

Oil from thyme is a powerful agent. According to laboratory research, it has antiviral impacts on HSV.

Apply the Thyme oil firmly to your fever blister regularly, to find noticeable benefits.

Use it either in smaller amounts on your fever blister or along with a mild carrier oil, like coconut oil.

Lemon Balm Oil

According to laboratory research, lemon balm oil has been determined to inhibit cell penetration by herpes viruses. How the lemon balm operates on the cells infected by herpes is still undetermined.

Lemon balm oil can get inside the skin layer and effectively cure the herpes virus. You can apply diluted lemon balm oil on the affected area.

You can quickly get rid of cold sores by using the diluted oil for around four times a day.

Ginger Oil

In a laboratory study, the elements of ginger oil were discovered to decrease symptoms of the cold sore disease. Ginger oil on your skin feels like warm and can relieve your cold sore by reducing the irritation.

Using the diluted combination of ginger oil topically can help you in curing your fever blister much more quickly.

Take into account that mixing ginger oil with a carrier oil in smaller amounts can lead to faster healing.

Sandalwood Oil

Sandalwood oil is renowned for its unique and strong scent, but according to a laboratory study, it can also combat the cold sore virus.

When a fever blister appears, diluted sandalwood oil can be applied straight to it. Sandalwood’s overpowering scent may irritate your nose, so if you want to use it, then combine it with one of the other mild oils.

Try using Sandalwood Oil only once in every alternate day.

Chamomile Oil

Chamomile oil is a highly effective anti-HSV and antiviral agent. It has also been shown to aid drug-resistant strains. When applied, chamomile oil also softens the skin and also provides relaxation.

The most efficient way to use it is to apply the diluted chamomile oil on a cold sore when you feel it is breaking out.

Use the Chamomile oil along with a carrier oil and apply it only once per day.

Eucalyptus Oil

Eucalyptus oil could help decrease cold sores size and severity. Some individuals claim that when applied, eucalyptus oil has a relaxing scent and a pleasant feeling on the skin. Before applying, always remember to dilute the eucalyptus oil. Limit your usage to four times of the day.


Several things are necessary to be present in mind while using essential oils as skin therapy. Diluting the oils with carrier oils like the jojoba oil or coconut oil will help prevent the fever blister from inflaming your skin further.

The risk of severe side effects of using essential oils may be smaller than that of pharmaceutical medications. Several herpes strains create drug resistance. Thus, essential oils could be efficient against such strains.


What causes fever blisters?

HSV-1 can cause blisters on the gums and the palate or the roof of your mouth, which quickly can become ulcers within the mouth. In some individuals, from moment to moment the pathogen becomes active again, causing fresh and vibrant sores on the surface of the skin, generally on the lip.

What are the other remedies of fever blisters?

There is presently no HSV-1 and HSV-2 drug or vaccination, but there are specific methods of minimizing your breakouts and reducing their frequency and size. The more good health you have, the lesser you are prone to get a breakout. Some other helpful remedies are –

  • Ice
  • Zinc Therapy
  • Lemon Balm
  • Witch hazel
  • Licorice extract
  • Apple cider vinegar
How to prevent fever blisters?

Take steps to enhance your immunity as well as stay as active as possible. Always get medical care at the first symbol of an outbreak if required. Take conventional antiviral drugs to reduce the severity of outbreaks. Avoid touching the fever blister. Do not reuse lip balm or any other mouth-touching product. If you have an open sore, then do not kiss or share utensils, straws or toothbrushes.

What essential oil is good for fever blisters?

As a first-aid oil, Tea Tree Oil is popular because it has strong antimicrobial characteristics. It is also used to treat viral, bacterial as well as fungal diseases and even herpes. Acne, cracked or rough skin, burns, sores, blisters, warts, athlete’s foot, boils, sunburn, bites of insects, chilblains, toenail fungus, and many other issues are suggested for treatment using Tea Tree Oil.