red light therapy for cold sores

Red Light Therapy for Cold Sores: Does It Work?

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Cold sores, also known as herpes labialis or oral herpes, are a common viral infection caused by the herpes simplex virus (HSV).1 These painful, fluid-filled blisters typically appear on or around the lips, mouth, or nose and can cause discomfort and embarrassment. While there are various treatment options available, one emerging therapy is gaining attention for its potential effectiveness in reducing the healing time and severity of cold sore outbreaks: red light therapy.

In this article, we will explore the concept of red light therapy for cold sores and delve into its potential benefits, safety, and usage. We will also highlight the Lifepro red light therapy devices that can be used for cold sore treatment, providing a comprehensive guide to help you make an informed decision about incorporating red light therapy into your cold sore treatment regimen.

What is Red Light Therapy?

Red light therapy, also known as low-level laser therapy or photobiomodulation, is a non-invasive treatment that utilizes specific wavelengths of red and near-infrared light to stimulate cellular activity and promote healing. It has been widely studied and used in various medical and aesthetic applications, including wound healing, pain relief, and skin rejuvenation.5

The therapeutic effects of red light therapy are believed to be mediated by the interaction between light-sensitive molecules within the cells and the absorbed light energy. This interaction triggers a cascade of cellular responses, including increased ATP production, enhanced blood flow, reduced inflammation, and improved tissue repair.5

Can Red Light Therapy Heal Cold Sores?

The potential of red light therapy in the treatment of cold sores has been investigated in several clinical studies. For instance, a study conducted by Schindl et al. in 1999 evaluated the efficacy of low-intensity laser therapy in patients with recurrent perioral herpes simplex infection. The results showed that patients treated with low-intensity laser therapy experienced a significantly longer recurrence-free interval compared to those in the placebo group.2

Another study by Zanella et al. in 2022 demonstrated the efficacy of red light therapy in preventing and managing recurrent herpes labialis. The researchers found that a 2-year treatment with red light therapy significantly reduced the frequency and duration of cold sore episodes, providing long-term relief for the participants.3

These findings suggest that red light therapy may have a positive impact on the healing process of cold sores, potentially reducing the duration of outbreaks and the associated discomfort. Red light therapy for wound healing has been studied closely and shown to have promising results.

Is Red Light Therapy Safe?

One of the key advantages of red light therapy is its safety profile. It is a non-invasive, non-thermal treatment that does not cause tissue damage or pain when used properly. The LED light emitted by red light therapy devices penetrates the skin without generating heat, making it suitable for sensitive areas like the lips and mouth.2

Red light therapy devices, such as the Lifepro red light therapy devices, are designed with built-in safety features to ensure the optimal and safe delivery of light therapy. These devices comply with safety standards and guidelines, providing peace of mind for users. 

However, it is essential to follow the manufacturer's instructions and recommendations when using red light therapy devices to minimize the risk of adverse effects.4 If you have any underlying medical conditions or are taking medications, it is advisable to consult with a healthcare professional before incorporating red light therapy into your cold sore treatment regimen.

How to Use Red Light Therapy for Treating Cold Sores

To effectively utilize red light therapy for treating cold sores, it is crucial to follow the recommended guidelines and protocols. Here are the steps to consider when using red light therapy for cold sore treatment:

  • Cleanse the affected area: Before applying red light therapy, gently cleanse the cold sore area with a mild soap or cleanser to remove any debris or bacteria.
  • Prepare the device: Ensure that the red light therapy device is fully charged or connected to a power source according to the manufacturer's instructions. Familiarize yourself with the device's settings and controls.
  • Position the device: Place the red light therapy device close to the cold sore area, ensuring that the LED light is directly targeting the affected area. Follow the manufacturer's recommendations regarding the optimal distance and duration of treatment.
  • Activate the therapy: Turn on the red light therapy device and select the appropriate settings for cold sore treatment. Start with the lowest intensity and gradually increase if tolerated.
  • Treatment duration: The recommended treatment duration may vary depending on the specific device and protocol. Generally, a treatment session of 10-15 minutes is recommended.
  • Frequency of treatment: Follow the recommended treatment frequency, which may range from daily to several times a week, depending on the severity of the cold sore outbreak and individual response.
  • Consistency: To achieve optimal results, it is essential to be consistent with red light therapy treatments. Follow the recommended treatment schedule and continue the therapy until the cold sore has fully healed.

Explore Lifepro Red Light Therapy Devices for Cold Sore Treatment

Lifepro offers a range of red light therapy devices that can be used for cold sore treatment. These devices are specifically designed to provide targeted and effective light therapy for various skin conditions, including cold sores.

The Lifepro red light therapy devices utilize advanced LED technology to deliver the optimal wavelengths of red and near-infrared light for maximum therapeutic benefits. These devices are portable, user-friendly, and feature multiple settings and intensity levels to suit individual preferences and treatment needs.

When choosing a Lifepro red light therapy device for cold sore treatment, consider factors such as device size, treatment area coverage, battery life, and additional features like timers or adjustable stands. This will ensure that you select a device that aligns with your specific requirements and treatment goals.

With Lifepro red light therapy devices and the potential benefits of red light therapy, you can take control of your cold sore management and experience the soothing relief and accelerated healing that this innovative therapy offers.

Disclaimer: This article is for informational purposes only and does not constitute medical advice. Always consult with a healthcare professional before starting any new treatment or therapy.


  1. Dougal G, Lee SY. Evaluation of the efficacy of low-level light therapy using 1072 nm infrared light for the treatment of herpes simplex labialis. Clin Exp Dermatol. 2013;38(7):713-718. doi:10.1111/ced.12069
  2. Schindl A, Neumann R. Low-intensity laser therapy is an effective treatment for recurrent herpes simplex infection. Results from a randomized double-blind placebo-controlled study. J Invest Dermatol. 1999;113(2):221-223. doi:10.1046/j.1523-1747.1999.00684.x
  3. Moskvin SV. Low-Level Laser Therapy for Herpesvirus Infections: A Narrative Literature Review. J Lasers Med Sci. 2021;12:e38. Published 2021 Jul 24. doi:10.34172/jlms.2021.38
  4. Hargate G. A randomised double-blind study comparing the effect of 1072-nm light against placebo for the treatment of herpes labialis. Clin Exp Dermatol. 2006;31(5):638-641. doi:10.1111/j.1365-2230.2006.02191.x
  5. Avci P, Gupta A, Sadasivam M, et al. Low-level laser (light) therapy (LLLT) in skin: stimulating, healing, restoring. Semin Cutan Med Surg. 2013;32(1):41-52.


Joel Gottehrer

Joel Gottehrer is the Co-Founder of Lifepro Fitness and has dedicated his life to helping people transform theirs. With over 12 years of experience in the fitness industry as a personal trainer and owner of two personal training studios, Joel has a wealth of knowledge when it comes to helping transform lives. After suffering from physical injuries, Joel and his business partner, Abraham Brach, came together with a common goal to alleviate the pain caused by their injuries.

They continued to find themselves disappointed with the results stemming from various products promising to relieve their pain, and with that – Lifepro Fitness was born. Joel's mission is to have a positive impact on millions of lives with the Lifepro brand. Whether it's finding new and innovative ways to help people recover from injuries or developing products to improve overall wellness, Joel is always looking for ways to push the boundaries. Thanks to his commitment to help people live their lives free of pain, Lifepro has been able to do this for thousands of people since its founding in 2017.

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