Is Blue Light Damaging Your Skin? We Asked the Experts

Trying to limit screen time sounds great in theory, but it can feel impossible to accomplish when everything from work Zoom meetings to a relaxing Insta-scroll involves your computer, tablet, or phone. But stepping away from the screen does have real benefits—especially when it comes to your skincare routine. 

We know screen time is responsible for eye strain, tech neck, and headaches, but there’s another factor to consider: blue light from our devices (like your smartphone and computer screen). Could consistent exposure to blue light be contributing to premature signs of aging and the appearance of dark spots? We turned to the experts to break down exactly what blue light is, how it’s impacting our skin, and what we can do to protect ourselves. 

About the Experts: 

Hadley King, MD, FAAD, is a board-certified dermatologist in NYC who specializes in medical and cosmetic dermatology. She is also a clinical instructor of dermatology at the Weill Medical College of Cornell University.

What Is Blue Light?

Blue light is light that’s given off from our devices. When you reach for your phone and tap the screen, you can see it light up—that visible light is known as “blue light,” which is really high-energy visible light, (or HEV light for short), made up of blue wavelengths from the visible light spectrum. While blue light is associated with screentime, the majority of blue light we’re exposed to comes from the sun along with UV light (or UVA and UVB rays). “HEV light is primarily from the sun, but it's also emitted by smartphones, tablets, televisions, fluorescent bulbs and computer screens,” says Hadley King, MD, FAAD, board-certified dermatologist in NYC.

A major increase in screen time has us more concerned with whether or not spending so much time in front of our devices is detrimental. While blue light exposure has been linked to a variety of health issues, (specifically related to the eyes), not all blue light is bad. When exposed to blue light in moderation, it offers up a slew of benefits. 

“Routine exposure to blue light, preferably from daylight, helps regulate our body's sleep-wake cycle, improves our mood, keeps us alert and can enhance memory,” says Dr. King. While some exposure can help regulate your sleep cycle, too much time staring at your screen before bed can actually mess with your body's natural circadian rhythm.

Is Blue Light Harmful to Skin?

While there are some benefits to blue light exposure, how it impacts our skin is reason enough to protect your complexion. “It can cause skin to age prematurely (also known as photo-aging),” says Dr. King. Just like sun damage from UV light, HEV light can lead to free radical damage, which contributes to early signs of aging. “These free radicals (or reactive oxygen species) cause skin cells to produce enzymes that break down collagen and elastin in the skin,” says Dr. King. 

HEV light can penetrate into the lower layers of skin called the dermis. Luckily, blue light isn’t associated with skin cancer, however it can make dark spots and redness more prominent. “It can also contribute to hyperpigmentation and may play a part in melasma and age spots,” says Dr. King. 

How to Protect Your Skin From Potential Blue Light Damage

The effects of blue light can be detrimental to the skin, but unfortunately we still don’t know just how much screen time is responsible for causing damage, nor do we know whether blue light from our digital devices is more harmful than the blue light emitted from sun exposure. While it would be useful to pinpoint the exact amount of time that can cause skin damage and contribute to dark spots and early signs of aging, it isn’t that simple. Instead, it’s best to exercise caution to protect our skin. Incorporate these small changes into your daily routine to make a difference. 

1. Switch Devices to Night Mode

While a digital detox definitely has its benefits, getting away from electronic devices altogether unfortunately isn’t the most realistic advice. Instead, switch to night mode. “Enabling the “night mode” settings on your digital devices permanently significantly reduces the blue light in favor of harmless yellow light,” says Dr. King. 

2. Use a Blue Light Screen Protector

Screen protectors that block out blue light can also help. “One option is to install covers that block the blue light from smartphones, tablets, and computer monitors,” says Dr. King. Blue light glasses are great for protecting our eyes, but they don’t exactly protect our skin. So, using a blue light screen protector alongside with blue light filtering glasses is a great idea to protect both your skin and eyes. 

3. Use An SPF That Blocks Out Blue Light

While your sunscreen may block out ultraviolet light, unfortunately it might not be capable of filtering HEV light. “Not all sunscreens include blue light in their standard broad-spectrum UVA/UVB coverage,” says Dr. King. While mineral sunscreens that are made of zinc oxide and titanium dioxide can block out visible light, “when micronized, they lose this ability,” says Dr. King. Look for sunscreen that contains the antioxidant Licochalcone A for added protection. 

“Clinical research has shown that sunscreens containing Licochalcone A offer effective and extended protection from HEV light in addition to UV,” says Dr. King. You can also try tinted iron oxide. “Tinted iron oxide can also help cosmetic formulations to block visible light,” says Dr. King. “We think that it takes about 3.5% iron oxide to get some visible light protection.” 

4. Use Skincare Products Filled With Antioxidants

Look for skincare products that contain antioxidants (like a vitamin C serum) to protect against oxidative stress, which contributes to skin aging. The same way these moisturizers, creams, lotions, and serums protect against environmental stressors (like the sun and pollution) they can also protect your skin against free radical damage caused by blue light. “For example, antioxidants Licochalcone A and Glycyrrhetinic Acid have been shown to work together to protect skin cells in the deeper epidermal layers from sun-induced damage,” says Dr. King.

We love how affordable this Blue Light Facial Serum Boost from FOURTH RAY BEAUTY is. A good rule of thumb is to look for skincare that says ‘anti-pollution’ as those types of products are packed full with antioxidants from essential vitamins and superfruits.