This article is reviewed, corrected, and approved by: Julia Weiss CNP| RN | MPH

Blue light therapy is a treatment that helps get rid of acne by attacking the bacteria that cause it and also helps reduce inflammation. Enhancing the appearance of wrinkles and other indications of aging can be further improved with this process.

Some Facts about Blue Light Therapy

The use of blue light therapy is generally considered safe and well-tolerated. However, it is important to follow carefully and handle the provided instructions and avoid direct exposure to light. Especially when someone is doing it at home on their own.

Here are some facts about bluelight therapy you should know

  • Blue light therapy devices are available in a variety of sizes and models to treat different areas of the body.
  • The length/duration of treatment differs based on the particular medical condition being treated. For example, acne treatment typically requires 10-15 minutes of daily exposure, while sun spots on skin or sun damage may require 20-30 minutes of exposure, and so on.
  • Bluelight therapy devices are commonly used in home settings, but they are also applicable in medical facilities.
  • Blue light therapy is a new but effective treatment with growing research support.

Pros And Cons Of Blue Light Therapy

Bluelight therapy is a non-invasive way to treat various skin conditions using specific wavelengths of blue light. Here are blue light therapy's benefits and drawbacks to consider before using it.

Blue Light Therapy Benefits

1. Effective for SAD: Treats Seasonal Affective Disorder (SAD) by regulating mood and sleep patterns.

2. Improved Sleep: Regulates circadian rhythm, leading to better sleep quality.

3. Acne Treatment: Targets and eliminates acne-causing bacteria, promoting clearer skin. It helps to reduce wrinkles and crow's feet.

4. Non-Invasive: Compared with surgical or drug-based treatments, blue light therapy is non-invasive and non-toxic.

5. Low Side Effects: Minimal side effects, making it safer for many.

Cons of Blue Light Therapy

1. Skin Sensitivity: Some may experience skin sensitivity or irritation, especially at high intensities.

2. Limited Regulation: Lack of standardized regulations for devices. Increased risk of macular degeneration.

3. Not for All Skin Types: May not suit for all skin types

4. Efficacy Variability: Inconsistent results across trials.

5. Expensive equipment limits accessibility.

Red Light Therapy vs. Blue Light Therapy

Red light vs. blue light therapy. Credits: ReviewsFellas©


Red Light Therapy

Blue Light Therapy

Purpose of the treatment

Promotes skin health, collagen production, wound healing, and pain relief.

It Treats Seasonal Affective Disorder (SAD), acne, teeth whitening, and improves sleep patterns.

Light Wavelength

Uses wavelengths around 630-700 nm.

Uses wavelengths around 415-470 nm.

Skin Benefits

Enhances skin texture, elasticity, and reduces fine lines and wrinkles.

Target acne-causing bacteria, may improve signs of aging, reduce scars and stretch marks. 

Health Benefits

Aids wound healing, reduces inflammation, and provides pain relief.

-Regulates circadian rhythm, potentially improving mood and sleep patterns.

-Improve hair growth and reduce pain


Generally safe, minimal side effects when used properly.

Generally safe, but prolonged exposure may have effects on skin and disrupt sleep.


Non-surgical, non-pharmacological treatment.

Non-invasive treatment option.

Side Effects

Minimal adverse effects and possible eye discomfort if not used correctly.

Potential eye strain and skin sensitivity, especially at high intensities.

Treatment Duration

Multiple sessions are required for noticeable effects.

Depending on the condition,


Limited standardized regulations for devices.

Limited standardized regulations for devices.

Variability in Effectiveness

The effectiveness is determined by the issue being treated as well as the individual's response.

Effectiveness varies based on intensity, duration of treatment, and individual response.


Limited info on product safety & effectiveness over time.

May trigger hypomania in bipolar individuals. Increased risk of macular degeneration with prolonged exposure.

Skin types

Depending on the skin type

Bluelight therapy may not be safe for all skin types, especially those prone to hyperpigmentation or burns. Considering these factors is important for effective treatment results.

Treatment Cost

- Varies based on device quality and type.

- Cost can be high, especially for high-quality devices.

Effectiveness Range

Varies; some users report significant benefits, while others see minimal results.

- Varies; effective for some but not all individuals.

Overall Consideration

Offers various health and cosmetic benefits, but results can be inconsistent.

- Effective for specific conditions like SAD and acne, but potential risks and limitations need to be considered.


Finally, Bluelight therapy is known to reduce various types of scars, whiten teeth, and serve other purposes as well. It has some advantages and drawbacks.

Before therapy, you can speak to a facial therapy specialist or photodynamic therapy specialist to get more information. They can provide you with detailed information about the pros and cons of blue light therapy.

Frequently Asked Questions (FAQs)

Q: What does blue light therapy do?

Ans: Blue light therapy can target skin conditions like acne and psoriasis by eliminating bacteria and reducing inflammation. It may also improve mood, sleep patterns, and signs of aging.

Q: What is the purpose of red and blue light therapy for teeth?

Ans: Red light therapy reduces pain after dental procedures, and blue light therapy whitens teeth by removing stains.

Q: Is it safe to use blue light therapy every day?

Ans: It's better if you don't use it every day. Instead, it's recommended to use it once or twice a week.