Red light therapy for cold sore

best mouthwash for canker sores | best red light therapy for cold sore

Cold sore is a troublesome virus that, once infected, stays in your body forever and can break out regularly. To ensure successful treatment, it is extremely important to apply the necessary treatment steps directly after the first symptoms of cold sore and to act as quickly as possible. If you should decide to carry out your treatment with the help of a red light therapy, we would like to help you determine the best red light therapy device for cold sores and your individual situation with our guide.  

  • Beispiel 1
  • Beispiel 2
  • Beispiel 3

Cold sore infection

In most cases, the first infection with cold sores occurs in childhood. Sharing food or dishes with a person who is already infected is the main way the virus is passed on. If the virus already exists in the family, the probability is very high that it will also be passed on to further generations, as there is a higher risk of infection. Therefore, it is extremely important to observe the most important hygiene rules during a cold sore outbreak in order to minimise and completely prevent the spread of the virus on one’s own body as well as to other people.

Possible triggers for a cold sore outbreak

In general, 8 out of 10 people are infected with the herpes virus type 1 (HSV-1) and some have regular outbreaks. There are many possible triggers for cold sores, starting with a weakened immune system, stress, a lack of protein (lysine) but also too much UV exposure. Patients report that cold sores also break out regularly at the same time of year. Especially in this case, it is important to follow the aforementioned reasons as best as possible in order to prevent a herpes outbreak.

Occurence of cold sore

Type Description

Stage 1: The first thing sufferers feel is a tingling sensation on the skin around the lip. This is the first sign that herpes is breaking out. After that, the affected area reddens and a small blister forms, which is filled with fluid.

Stage 2: The vesicle becomes larger and loses fluid. The wound only tingles occasionally, causes a feeling of tension and hurts a little. This is the particularly contagious phase, so it is advisable not to touch the wound under any circumstances. Pay special attention to good hygiene and wash your hands regularly, especially if you accidentally touch the affected area.

Stage 3: A dry crust or scab forms over the blisters. Once this occurs, you are no longer contagious, it is just a wound that needs to heal. You should treat the blister regularly with herpes cream to prevent it from rupturing and to ensure quick healing.


Note: Especially during Stage 2, try to keep the wound as dry as possible to prevent unnecessary further fluid build-up that could slow regeneration and cause another outbreak. 

The different treatments for cold sores

Cold Sore Cream
Treatment of cold sores with creams is done with the active ingredients aciclovir and penciclovir, which are available without a prescription. Studies show that the symptoms can subside a maximum of a few days earlier with timely treatment. In order for these antiviral agents to work best, the creams must be applied to the affected area every 3 to 4 hours during the day. Generally, the treatment lasts five days.

Treatment with L-lysine tablets/capsules
The amino acid L-lysine has a special significance in connection with the multiplication of herpes viruses and can protect against repeated occurrences of cold sores. Taking lysine capsules can therefore be useful. General treatment here can take up to a week, although it should be mentioned that such treatment is mainly used for prevention.

Red light treatment
Using LED technology, good red light therapy promises a significant reduction in the duration of herpes and a decrease in general outbreaks. Since its introduction, the product has been considered a breakthrough invention in the fight against cold sores. The therapy takes place in 60-second sessions and should be applied 1 to a maximum of 3 times daily to guarantee the greatest success. The best red light cold sore devices allow for a shorter and significantly cleaner course of herpes.

Factors to consider when buying the best product

If you’re considering purchasing a red light therapy device for cold sores, here are some key factors to keep in mind:

  1. Wavelength: When choosing a red light therapy device, it’s important to consider the wavelength of the light. Red and near-infrared light are the most effective wavelengths for treating cold sores. Look for a device that delivers light in the 600-1000nm range.

  2. Power output: The power output of the device is also important. A higher power output generally means that the device will be more effective at treating cold sores. Look for a device with a power output of at least 100mW/cm².

  3. Treatment time: The length of time you need to use the device will vary depending on the severity of your cold sore. Look for a device that has a treatment time of at least 5 minutes.

  4. Ease of use: Red light therapy devices should be easy to use and operate. Look for a device that has simple controls and is easy to hold and position.

  5. Size and portability: Consider the size and portability of the device. If you plan to use the device at home, a larger device may be fine. But if you need to use it on the go, look for a smaller, portable device.

  6. Price: Red light therapy devices can range in price from around $30 to several hundred dollars. Consider your budget when choosing a device.

  7. Reviews: Before making a purchase, be sure to read reviews from other users. Look for a device with positive reviews and a high rating.

Final words | Best red light therapy for cold sore

The best red light therapy for cold sores is also heavily dependent on how quickly symptoms are treated. The faster the treatment is started, the higher the chances of success for a shortened course. However, it can be said that treatment must always be tailored to your own needs and how far advanced the infection is.

Table of Contents



I'm Sophie, an undergraduate studying Marketing with a keen interest in drugstore products. Through my writing, I explore the vast world of affordable beauty and personal care items. I provide honest reviews and recommendations, guiding readers to discover quality products that fit their budget and enhance their self-care routines.