Cold sores are fluid-filled lesions. You can get cold sores on your lips, cheeks, nose, and even on the skin surrounding your eyes. Keep in mind that cold sores are different from canker sores. Cold sores are contagious, whereas canker sores are not. Resulting from an infection by the herpes simplex virus, cold sores need to be treated immediately. Doctors commonly prescribe antiviral drugs and topical ointments to treat them. However, if you are looking for a quick remedy that you can apply at home, you can use hydrogen peroxide. We discuss how hydrogen peroxide works against cold sores and how to use it properly and safely to treat blisters. So, read on.

Is Hydrogen Peroxide A Cure For Cold Sores?

When you use home treatments for cold sores, they typically consist of methods that help in alleviating pain and drying the sores so that the healing process is faster. Hydrogen peroxide makes an effective home remedy for these blisters as it works similarly. This commonly used disinfectant for cuts and wounds can help treat cold sores because of these properties (1):

It is an antiseptic that cleanses the skin and kills the microorganisms present on the skin’s surface. This treats and prevents the infection (2).

It has antiviral properties that can specifically target the virus causing the cold sores. The mechanism of this antiviral activity involves weakening the molecular framework of the virus by discharging oxygen atoms (3).

An added advantage of using hydrogen peroxide for cold sores is that it can help to lighten the scars that the blisters may leave behind. This is because of the skin bleaching properties it possesses (4).

Let us now look at the different ways in which hydrogen peroxide can be used to treat cold sores.

How To Use Hydrogen Peroxide To Cure Cold Sores

Home Treatment Of Cold Sores With Hydrogen Peroxide

1. Gargle Hydrogen Peroxide For Cold Sores

You Will Need

½ cup hydrogen peroxide solution ½ cup water Q-tip

What You Have To Do

How Often You Should Do This

Repeat this once or twice every day.

Why This Works

The antiseptic and antiviral properties of hydrogen peroxide will treat the viral infection and heal the sore.

2. Salt And Hydrogen Peroxide For Cold Sores

You Will Need

1 teaspoon salt Hydrogen peroxide solution

What You Have To Do

How Often You Should Do This

Apply this twice a day.

Why This Works

Salt possesses antimicrobial properties (2). It can speed up the healing process of the cold sore even more when used in combination with hydrogen peroxide.

3. Hydrogen Peroxide And Baking Soda For Cold Sores

You Will Need

1 teaspoon baking soda Hydrogen peroxide solution

What You Have To Do

How Often You Should Do This

Repeat this once every day.

Why This Works

Baking soda is also a commonly used antiseptic agent. It eliminates the virus, reduces the inflammation at the affected site, and soothes the inflamed skin (3). These home remedies using hydrogen peroxide are an effective and inexpensive way to treat cold sores. Some OTC medications may work, but they are full of chemicals that cause quite a lot of harm to your skin. Go for one of the remedies listed above and treat the cold sore without any side effects. Here are certain things that you should keep in mind if you are using hydrogen peroxide to treat cold sores.

Things To Remember

Hydrogen peroxide will not prevent the formation of new blisters. It will also not make an infected person any less contagious.

Always use 3% hydrogen peroxide as it is not too strong and will not cause damage to your skin, provided you use it properly.

You can use the solution to clean the affected area several times a day.

Make sure that you keep your skin clean at all times. Always use sterilized cotton balls or swabs to apply the peroxide solution.

If you are doubtful about using hydrogen peroxide for cold sores, consult a health care professional and only then use it. Do cold sores mean you have an STD? A cold sore does not always imply that you have an STD. The herpes simplex virus type 1 (HSV-1) causes the majority of cold sores. It mainly affects the lips and is not transferred through sexual contact. Cold sores can also be caused by another form of herpes simplex virus called HSV-2, which is less frequent. Does toothpaste help cold sores? Cold sores are caused by the HSV-1 virus, which could be controlled by a component found in toothpaste. Many kinds of toothpaste contain sodium lauryl sulfate (SLS), which is supposed to aid in drying out blisters and cold sores. However, the only evidence supporting the claim that toothpaste can prevent or treat cold sores is anecdotal. What vitamins prevent cold sores? Cold sores can be treated and prevented with ascorbic acid (a type of vitamin C found naturally in foods). While vitamin C does not cure cold sores, it can help them heal faster. According to one study, rubbing diluted on a cold sore ascorbic acid helped prevent it from worsening (4). Does coffee make cold sores worse? Since coffee is a stimulant, its high consumption may reawaken HSV-1. While a single cup of coffee is unlikely to cause harm, excessive coffee drinking can be harmful. However, the compounds in coffee have been found to hinder the growth and cell reproduction of herpes virus (5).

Sources