Introduction

If you have started reading this article, we hope you are blue light-equipped!

Unfortunately, we live in a world bathed in blue light. Phones, iPads, computers, desktop screens, laptops, - all these tablets emit an invisible ray of light holding the power to severely damage our sleep, mood and skin. Our reliance on digital devices has led to a growing concern - the blue light effect on skin. The lockdown compelled many of us to work-from-home, an unanticipated culture that now shapes our digital lives. While blue light plays a vital role in regulating our circadian rhythm, concerns are rising about its impact on our skin's health.

Since you are already exposed to the ramifications of blue light, bear the brunt of few more rays and get educated. This blog delves into the science behind blue light, its potential to accelerate skin ageing, and how one can prevent it.

What is Blue Light?

Blue light is a part of the visible light spectrum, the range of colours our eyes can perceive. It has a shorter wavelength and higher energy compared to other visible colours like red or green. Think of it as the more energetic sibling in the light family.

Sunlight is the biggest source of natural blue light. It plays a crucial role in regulating our circadian rhythm, the internal clock that controls our sleep-wake cycle. Exposure to blue light during the day helps us feel alert and energised.

However, the blue light effect on skin isn't just sunshine and rainbows. In recent years, our exposure to artificial sources of blue light has skyrocketed. Our exposure to blue light-emitting devices like tablets, smartphones, TV, iPads & LED lights have escalated beyond a point where it could be detrimental for our body. Unlike sunlight, these artificial sources emit blue light at a more concentrated level raising concerns about their potential impact on our health, particularly our skin.

Blue light effect on skin ft. UV Damage:

We're all familiar with the sun's harmful effects, and the culprit is ultraviolet (UV) radiation. UV radiation is invisible to the naked eye but exists on a spectrum with two main players: UVA and UVB rays.

UVA rays have a longer wavelength and penetrate deep into the skin's dermis, the supportive layer. This deep penetration is linked to premature ageing, like wrinkles and loss of elasticity. UVA rays are also responsible for hyperpigmentation, causing uneven skin tone and sunspots.

UVB rays, on the other hand, have a shorter wavelength and are absorbed by the skin's epidermis, the outer layer. This is what causes sunburn, the painful reddening and inflammation of the skin. Excessive UVB exposure also contributes to UV damage to skin & increases the risk of skin cancer. Here's where blue light differs from UV rays. Compared to UV rays, blue light has a shorter wavelength but more energy. While UV rays penetrate deep into the skin, blue light primarily affects the upper layers. This is why blue light isn't directly linked to skin cancer, unlike UV radiation.

What is the Blue Light Effect On Skin?

While blue light doesn't penetrate as deeply as UVA rays, it can still impact the skin's health in several ways:

Blue light effect on skin: Photoaging

Blue light effect on skin can generate free radicals, unstable molecules that damage skin cells. This damage disrupts collagen production, a protein that provides skin with structure and elasticity. Over time, this breakdown of collagen leads to visible signs of photoaging, including:

Wrinkles: As collagen production declines, the skin loses its plumpness and fine lines and wrinkles become more prominent.

• Loss of Elasticity: Collagen also contributes to skin's ability to bounce back. With reduced collagen, the skin becomes less elastic and can sag or appear loose.

Blue Light Effect On Skin: Hyperpigmentation

Blue light effect on skin can stimulate the production of melanin, the pigment that gives skin its colour. This can lead to hyperpigmentation, which appears as:

• Dark spots: These are concentrated areas of increased melanin production, often appearing on sun-exposed areas.
• Uneven skin tone: Overall skin tone can become patchy and uneven due to scattered melanin production triggered by blue light exposure.

Blue Light Effect On Skin: Increased Skin Sensitivity

Studies suggest blue light exposure might worsen existing skin conditions like rosacea and eczema. The exact mechanism isn't fully understood, but UV damage on skin may trigger inflammatory responses in these already sensitive skin types.

Blue Light Effect on Skin: Weakened Skin Barrier Function

The outermost layer of the skin, the stratum corneum, acts as a barrier protecting us from environmental aggressors. Blue light exposure might disrupt the integrity of this barrier, making the skin more susceptible to dryness, irritation, and environmental damage.

Combating Blue Light Effect On Skin: Protective Measures

While we can't completely eliminate the UV damage to skin, there are practical strategies that one can use to minimise its impact:

Reduce Screen Time and Adjust Settings:

The first line of defence is managing our screen time. Take regular breaks from your devices, allowing your eyes and skin some respite. Additionally, dimming your screen light would be the right thing to do. Intense and brighter light allow the artificial sun rays to penetrate deeper into your skin. There are also many devices that offer the “night-mode” option wherein, they automatically change the colour to warmer tones. These warm lights reduce the probability of skin damage types.

Utilise Blue Light Blocking Filters:

For those who rely heavily on screens, consider these optical armours:

• Glasses: Meticulously engineered glasses with lenses that filter out a portion of blue light.
• Screen Protectors: Screen protectors applied directly to your device can also filter some blue light.

Skincare with Antioxidants:

Our skin has its own natural defence system against free radicals, but blue light exposure can overwhelm it. This is where skincare with antioxidants comes in. Antioxidants are compounds that neutralise free radicals, preventing the UV damage to skin. Look for serums and moisturisers rich in antioxidants like Vitamin C, E, and green tea extract to strengthen your skin's defenses against blue light.

Conclusion

Blue light has become an indispensable part of our lives, owing to our heavy dependance on digital devices. Exposure to excessive blue light can also hamper the health of our skin, leading to premature ageing, hyperpigmentation, increased sensitivities and tanning.

The good news? We can take control! By employing practical strategies like reducing screen time, adjusting device settings, and using blue light filters, we can minimize the blue light effect on skin. These practical adjustments also help in improving your circadian rhythm.

Embrace healthy screen habits and empower your skin to glow! With a little awareness and proactive measures, you can enjoy the benefits of technology while maintaining a radiant complexion. Till then, keep a watch on that screen-time!