From Blue Light filter glasses to computer screen filters, Blue Light protection is increasing in both awareness and popularity. But while the primary concern lies in Blue Light’s effect on our eyes and UV rays have always been seen as the source of premature skin ageing, research is increasingly showing that Blue Light (a.k.a. High-Energy Visible Light) is another major culprit. So what is it and how does it damage your skin? Read on for the low down.
What does Blue Light mean and what is it?
The first step of understanding Blue Light is understanding light itself. In its simplest form, light can be broken down into visible and invisible spectrums, with those pesky UVA and UVB light rays sitting in the invisible section of the two.
Visible light, on the other hand, sits on a rainbow spectrum and is emitted in wavelengths, with different coloured light rays emitting different wavelength energies. The shorter the wavelength the more energy the light has and in bad news for our skin, Blue Light (like its name High-Energy Visible Light suggests) is amongst the shortest and highest energy wavelengths in the spectrum. This means it has lots of energy to get up to extra mischief and cause damage to the skin!
Where does Blue Light come from?
Blue Light sources are all around us and come from both inside and outside. Although sunlight is the biggest natural source of Blue Light (which is the reason why we see the sky as blue when we’re outside), other sources include electronic devices such as cell phones, laptops, computers, TV screens, as well as energy-efficient fluorescent bulbs and LED lights. Although not as powerful as the light which is emitted from the sun, our increasing dependence on technology means we are gradually being exposed to more and more sources of Blue Light for longer periods of time, making protection more important than ever before.
How does Blue Light cause skin damage?
While UV rays have long been viewed as the main source of premature skin ageing, research is now showing that constant exposure to Blue Light can inflict our skin with the same damage. With its powerful wavelengths, Blue Light penetrates deeply and can damage all layers of the skin, impair the skin's barrier function and allow damaging free radicals to form. This in turn can lead to premature ageing by inducing oxidative stress, weakening the epidermal layer and causing hyper pigmentation.
How do Trilogy's SPFs protect skin from Blue Light?
With algae-derived super-ingredient PEPHA®-AGE - extensively tested and shown to improve skin resilience and defence against light - Age-Proof Multi-Defence Moisturiser SPF15 and Multi-Shield Moisturiser SPF15 both offer daily nourishment while also helping to protect skin round the clock from UVA, UVB and Blue Light sources.
What's the difference between the two SPFs?
While both SPFs offer the same benefits, the difference lies in their textures. Multi-Shield Moisturiser SPF15 is a lightweight moisturiser perfectly perfectly suited to normal or combination skin types, while Age-Proof Multi-Defence Moisturiser SPF15 has a richer consistency and is a must for mature skin types or those looking for an extra hydration boost!