Beyond Acne: Lesser-Known Uses for Blue Light Technology

Blue light therapy at 415–450nm targets specific chromophores in skin tissue, with the strongest evidence in acne vulgaris treatment through photoactivation of endogenous porphyrins. The MitoGLOW LED mask includes blue light alongside red and near-infrared for comprehensive facial treatment.

Reviewed by Dr. Melania Montes, PhD, UC Berkeley- Expert in Cell Biology

Acne is the most common skin complaint in young adults, with around 50 million Americans affected every year. The list of remedies is seemingly as long as the list of sufferers. There are hundreds of cleansers and ointments on the market, as well as countless traditional remedies that range from the interesting (apple cider vinegar) to the bizarre (urine therapy).

Blue light technology is one of the most intriguing of these, and studies suggest that it may support overall skin health. It’s non-invasive and simple, and it beats splashing urine on your face any day! A little blue light application may help promote clearer skin, but the benefits of blue light don’t stop there (1).

Pre-Application: Understanding Your Skin’s Needs

Most types of common acne are associated with a bacterium called Propionibacterium acnes (P. acnes), which is sensitive to certain wavelengths of light. Regular use of blue light technology may help support clearer skin and reduce visible blemishes (2). However, there are some key precautionary steps:

• Skin type assessment: A dermatologist can tell you if you’re a suitable candidate for blue light application. There are very few side effects, but the risk of irritation is greater in those with photosensitivity disorders.

• Common concerns alongside acne: Blue light technology is also commonly used in skincare routines to support skin vitality, including the appearance of sun-damaged skin.

• Identifying priority areas: You can treat all of your skin, but should focus more on priority areas, including ones with more blemishes or visible sun damage.

• Setting realistic expectations: Although blue light application may help improve the appearance of your skin, it’s not a magic bullet and may not provide noticeable results after the first use. It’s important to set realistic expectations and complete your full course of sessions for optimal results.

Therapy: Preparing Your Skin

The next step is to ensure your skin is properly prepared for the application. There are a few ways to do this:

Products That Support Blue Light Effectiveness

Certain ingredients can enhance the effectiveness of blue light treatments. Photosensitizing agents like aminolevulinic acid (Levulan), used under professional supervision, can boost blue light's impact. 

Pre-treatment with cleanising agents such as salicylic acid and benzoyl peroxide can also help by cleansing the skin prior to use, while niacinamide (a form of vitamin B3) offers some protective benefits.

For improved absorption, gentle exfoliation can be beneficial, just be careful to avoid over-irritating the skin.

Ingredients to Avoid Before Application

If you have any concerns about skin sensitivity, consult your dermatologist before beginning a blue light skincare routine.

Individuals with sensitive skin should avoid using retinoids (common in many cosmetics and anti-aging products), as they may increase skin sensitivity. The same applies to alpha hydroxy acids (AHAs) and strongly fragranced creams or cleansers that may irritate the skin.

Ideal Pre-Session Routine

Sunscreens and makeup that provide sun protection may reduce the efficacy of blue light technology. These formulas often contain ingredients such as zinc oxide, iron oxide, and titanium dioxide, all of which can block wavelengths.

• For best results, wash your face before your session, removing makeup and sunscreens.

• If you have any thick facial hair, shave it off two days before treatment, and don’t shave for at least 3 days after.

• Speak with your dermatologist if you have a history of skin complaints other than acne, including herpes simplex virus outbreaks.

Post-Application: Maintain a Skincare Regimen

After your session, some individuals may experience temporary skin sensitivity. This may include mild dryness or redness, which is typically short-lived.

Use Complementary Skincare

For the first four days, clean the treated area with warm water and a gentle cleanser—don’t scrub with sponges or loofahs. Apply a moisturizing sunscreen to the area (Vaseline can help with particularly dry patches), and reapply every couple of hours for adequate protection.

If you experience any discomfort or sensitivity, apply a cold compress—a simple wet cloth or bag of frozen vegetables will suffice. 

Whatever you do, don’t pick your scabs or peel your skin. It might be tempting, but it’s important to let everything heal naturally!

Create a Weekly Schedule

Try to stay indoors for several days after application. If you must go outside, protect yourself—wear sunscreen, a wide-brimmed hat, long-sleeve tees, and a scarf to cover your face.

Plan everything in advance, making sure you have all of the products you need and remember to use them when required (sunscreen every few hours, Vaseline on dry patches).

Pay extra care during the spring and summer, especially in the morning and early afternoon when sunlight is stronger and your skin may be more exposed.

Don’t use perfume on treated areas, and avoid using bandages, exfoliants, anti-aging skin creams, or anything else that might irritate your skin.

Product Recommendations by Skin Type

Regardless of your skin type, you should always prioritize gentle cleansers and hydrating moisturizers after a blue light application.

However, if you have particularly sensitive skin, you may benefit more from products with soothing ingredients like aloe vera or E45 cream, while avoiding anything that could irritate or damage the skin barrier.

Conclusion: Blue Light Technology for Holistic Skincare

Blue light technology may support skin clarity, help reduce the appearance of blemishes, and complement an overall skincare routine. While it’s non-invasive, it needs to be used with care, including a proper pre- and post-care routine that prioritizes keeping your skin clean, avoiding irritants, and maintaining hydration using Vaseline or a gentle moisturizer.

Finally, keep track of all changes in the days following your use. If the discomfort doesn’t subside, the irritation is too much to bear, or you notice any concerning changes—including yellow crusty patches—contact your dermatologist.

For at-home blue light technology, check out our red light therapy mask, which is designed to support skin clarity and overall skin wellness through the use of red and blue light in one easy-to-use format.

References

1. Gold MH, Andriessen A, Biron J, Andriessen H. Clinical Efficacy of Self-applied Blue Light Therapy for Mild-to-Moderate Facial Acne. J Clin Aesthet Dermatol. 2009; 2(3):44-50.
2. Diogo MLG, Campos TM, Fonseca ESR, Pavani C, Horliana ACRT, Fernandes KPS, et al. Effect of Blue Light on Acne Vulgaris: A Systemic Review. Sensors (Basel). 2021; 21(20):6943.