Understanding the Effects of Blue Light Effects on the Skin
Did you know that your smartphone, laptops, and TV screens actually give off blue light? In the last decade, dermatologists and researchers have uncovered that blue light is emitted from digital devices, which is commonplace in our daily lives, particularly at the workplace. This has led to increased attention on the effects of blue light and our skin.
Blue light is part of the visible light spectrum, which is naturally emitted by the sun. However, with the proliferation of artificial sources like smartphones and mobile devices, this has greatly increased our exposure to blue light. At the workplace, the regular professional working in an office-based setting, spends an average of 7 hours a day in front of screens.
What blue light does to our skin
It is vital to understand that blue light penetrates the skin more than ultraviolet (UV) light, which allows it to reach the deeper layers where collagen and elastin are found, which will manifest with the following in the skin:
- Skin aging – This leads to damage of important structures of our skin that leads to damage of DNA and important structures. This causes the skin to lose its firmness and elasticity, leading to wrinkles and sagging.
- Hyperpigmentation – Research has shown that blue light worsens existing pigmentation conditions, i.e melasma. This is more accentuated in individuals with darker skin tones.
- Skin inflammation – Prolonged exposure blue light has been shown in studies to lead to increased inflammation, which leads to worsening of conditions such as acne and dermatitis.
On the other hand, it is also necessary to understand that dermatologists have also harnessed the effects of blue light in the medical setting to treat the skin. For example, blue light in licensed medical devices has been shown to have anti-bacterial effects and used to treat conditions like acne and reduce inflammation in psoriasis skin. However, it is rarely used in isolation, and combination treatment with topical creams and oral medications, is required to effectively treat the aforementioned conditions.
How can I protect myself in the workplace?
In the workplace, we are constantly exposed to digital devices, computer screens and LED lighting. It then becomes essential to integrate these simple steps to reduce the ill-effects and protect our skin:
- Broad-Spectrum Sunscreens: Look for sunscreen that offers wide protection from UV light and include ingredients that protect against visible light (which will include blue light).
- Device management: Install a blue light filter on your laptop screens to reduce exposure. It is also advisable to take regular screen breaks, which can be achieved by taking a 20-second break every 20 minutes to look at something 20 feet away. Many computer operating systems also have adjustable screen settings to reduce blue light emission during evening hours.
- Build a healthy lifestyle regime: Incorporate a diet rich in anti-oxidants like fruits and vegetables to support against the oxidative stress you are subjected to from blue light, which goes a long way to supporting the healthy renewal of your skin.
When do I need to seek help?
As blue light exposure in the workplace becomes increasingly unavoidable, learning more about skin protection becomes important. If you notice any effects on blue light showing on your skin, it is advisable to pay a visit to your dermatologist before starting yourself on skincare products. You might read that products containing vitamin C, vitamin E, and niacinamide, may be useful to help with your skin. However, it is important to ascertain if these are suitable for your skin and skin type. Your dermatologist will evaluate your skin type, understand your concerns, and evaluate if any existing conditions are present that may conflict with treatment options available. The most suitable plan can then be formulated to address your needs.
Conclusion
Many professionals have to spend long hours in front of screens, whether at their desk in front of a laptop or in meetings with digital presentations. The cumulative effect of blue light exposure can contribute to premature skin aging, hyperpigmentation, and increased inflammation, particularly in those with sensitive skin.
While more research is still required to fully comprehend the full impact of blue light and our skin, current evidence suggests that it plays a role in many skin conditions. It is therefore important to understand the effects of blue light, and to proactively seek medical help from a dermatologist to help protect your skin early, so as to keep up with the demands of a digital work environment.
Schedule an appointment with Dr Kok today at the clinic most convenient for you and get personalised advice on prevention and skincare tips to protect your skin from the effects of blue light:
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Contributed by: Senior Consultant Dermatologist, HMI Medical Centre Farrer Park & MHC Medical Centre (Amara) |
References
- Clement M, Daniel G, Trelles M. Optimising the design of a broad-band light source for the treatment of skin. J Cosmet Laser Ther. 2005 Dec;7(3-4):177-89.
- Regazzetti C, Sormani L, Debayle D, Bernerd F, Tulic MK, De Donatis GM, Chignon-Sicard B, Rocchi S, Passeron T. Melanocytes Sense Blue Light and Regulate Pigmentation through Opsin-3. J Invest Dermatol. 2018 Jan;138(1):171-178.
- Mahmoud BH, Ruvolo E, Hexsel CL, Liu Y, Owen MR, Kollias N, Lim HW, Hamzavi IH. Impact of long-wavelength UVA and visible light on melanocompetent skin. J Invest Dermatol. 2010 Aug;130(8):2092-7.
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