When it comes to skin health, most of us know the basics about UV rays and the importance of sunscreen. But there’s another culprit on the scene: high-energy visible (HEV) light. Known as “blue light,” HEV light is everywhere, from our devices to natural sunlight, and it’s sneaky. While not as immediately damaging as UV rays, prolonged exposure to HEV light can harm your skin over time. Here’s what you need to know about HEV light, how it affects skin health, and what you can do to protect yourself.
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What Is HEV Light and Where Does It Come From?
Understanding High-Energy Visible (HEV) Light
HEV light, also known as blue light, falls in the visible light spectrum between 400 and 500 nanometers. Unlike UV light, which is invisible and primarily comes from the sun, HEV light is part of the visible light spectrum and is emitted from both natural and artificial sources. While our bodies can’t sense UV rays, we experience HEV light every day, especially with increased screen time.
Common Sources of HEV Light
HEV light is emitted by various sources, including:
- Sunlight: Natural sunlight is a major source of HEV light, making outdoor exposure the largest contributor.
- Digital Devices: Phones, computers, and tablets all emit HEV light, and since we’re using these devices more than ever, our exposure is on the rise.
- LED and Fluorescent Lighting: Even indoor lights can contribute to HEV exposure, especially in environments with high LED light usage.
How HEV Light Impacts Skin Health
Oxidative Stress and Skin Aging
HEV light penetrates deeply into the skin, reaching the dermis. When it interacts with skin cells, it creates oxidative stress—an imbalance between free radicals and antioxidants. Oxidative stress damages the skin’s structural proteins, such as collagen and elastin, leading to premature aging, fine lines, and wrinkles.
Hyperpigmentation and Uneven Skin Tone
One of the more visible effects of HEV light exposure is hyperpigmentation. Studies have shown that HEV light can stimulate melanocytes (the cells responsible for producing pigment), leading to dark spots and an uneven skin tone. This is especially a concern for individuals with darker skin tones, as HEV-induced pigmentation can be harder to treat.
Skin Barrier Disruption
Prolonged exposure to HEV light can weaken the skin’s natural barrier. The skin barrier is crucial for retaining moisture and protecting against pollutants. When compromised, it can lead to dryness, sensitivity, and an increase in inflammatory skin conditions like eczema and rosacea.
Protecting Your Skin from HEV Light
Use Broad-Spectrum Sunscreen with HEV Defense
While traditional sunscreens protect against UV rays, some newer formulas also include ingredients specifically designed to block HEV light. Look for sunscreens with antioxidants, as they help neutralize free radicals produced by HEV light. Mineral-based sunscreens containing zinc oxide or titanium dioxide can also reflect HEV light.
Incorporate Antioxidants into Your Skincare Routine
Antioxidants are essential for combating oxidative stress caused by HEV exposure. Vitamin C, Vitamin E, and niacinamide are powerful antioxidants that protect against HEV-induced damage. Apply an antioxidant serum in the morning before sunscreen to create an additional layer of defense.
Adjust Your Screen Settings and Use Blue Light Filters
Most devices now come with a “blue light filter” setting, which reduces the amount of HEV light emitted. Use these settings in the evening to minimize exposure, especially close to bedtime. For an extra layer of protection, consider using a blue light filter screen protector on your devices.
Wear Protective Clothing and Accessories Outdoors
On sunny days, wearing hats and UV-blocking sunglasses can help shield your face from both UV and HEV light. While clothing doesn’t entirely block HEV light, it can reduce overall exposure, especially during peak sunlight hours.
Best Ingredients for Combatting HEV Light Damage
Top Ingredients to Look for in HEV Defense
Certain ingredients are particularly effective for counteracting HEV damage:
- Vitamin C: A potent antioxidant that brightens skin and reduces oxidative stress caused by HEV exposure.
- Niacinamide: Helps strengthen the skin barrier and minimizes inflammation, making it ideal for sensitive skin.
- Resveratrol: A powerful antioxidant found in red grapes, resveratrol helps to neutralize free radicals and protect collagen.
- Green Tea Extract: Contains polyphenols that soothe and protect skin from oxidative damage.
Ingredients to Avoid with HEV Light Exposure
Some ingredients can increase sensitivity to HEV light and should be used with caution:
- Photosensitizing Ingredients: Retinol and AHAs (like glycolic acid) can increase skin sensitivity to light. If you’re using these, be diligent about sun protection.
- Fragrances and Essential Oils: These can increase the risk of irritation and sensitivity, especially when combined with prolonged screen exposure.
HEV Light Myths: Separating Fact from Fiction
Myth 1: HEV Light is Harmless Indoors
Just because you’re indoors doesn’t mean you’re protected from HEV light. Digital devices like phones and laptops emit HEV light, and with our daily screen time adding up, it’s wise to take precautions. Using antioxidant-rich skincare and screen filters can help reduce indoor HEV exposure.
Myth 2: HEV Light Only Affects People with Sensitive Skin
While HEV light can be particularly irritating for sensitive skin, it can affect all skin types. Over time, HEV light exposure can contribute to signs of aging, hyperpigmentation, and other skin issues, regardless of your skin’s sensitivity level.
Myth 3: Sunscreen is Unnecessary for HEV Protection
Many people think sunscreen is only for UV rays, but certain sunscreens can also protect against HEV light. Look for broad-spectrum formulas that mention HEV or blue light protection, and pair them with antioxidants for full-spectrum defense.
Creating an HEV-Proof Skincare Routine
Morning Routine for HEV Protection
Start your day with a protective layer to defend against HEV light:
- Step 1: Cleanse with a gentle, hydrating cleanser to prep your skin.
- Step 2: Apply an antioxidant serum (like Vitamin C) to guard against free radicals.
- Step 3: Follow with a broad-spectrum sunscreen that includes HEV protection or zinc oxide.
- Step 4: Finish with a moisturizer to lock in hydration and add a blue light filter to your devices.
Evening Routine for Repairing HEV Damage
At night, focus on repairing any damage caused by HEV light:
- Step 1: Cleanse your skin to remove impurities and pollutants.
- Step 2: Use a hydrating serum or essence to restore moisture.
- Step 3: Apply a barrier-strengthening moisturizer with niacinamide or ceramides.
Embracing HEV Protection as Part of Daily Skincare
With HEV light everywhere, taking steps to protect your skin is becoming just as important as defending against UV rays. By adding antioxidants, choosing products that shield against HEV exposure, and practicing smart screen habits, you can keep your skin healthy, resilient, and protected against the unseen challenges of modern life.
