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Glass isn't all it's cracked up to be. Here's why.

Glass isn't all it's cracked up to be. Here's why.

Before LifeJacket, I used to fly a fair amount, visiting different teams, factories, partners or customers abroad. 

 

At the time, I had a modest fear of flying so I always tried to sit by the window. For some reason, seeing what was going on offered moderate relief. Not sure how that logic stacks up if the plane suddenly started plummeting but for some reason, it helped.

 

Fast forward to today and I often think back to those days. For better and for worse. But mainly, because one of the most surprising things we've learnt on the LifeJacket journey is the fact that skin damage occurs even when there's a sheet of glass between you and the sun.

 

In fact - and loosely connected to my flying story - a study from the University of California in 2014 found that cabin crew and airline pilots had double the incidence of skin cancer compared to the general population. One hour behind the cockpit at 30,000 feet is the equivalent to 20-minutes on a sun bed.

 

Lesson of the day? If you’re a pilot, air steward or frequent-flier, wear sunscreen?

 

Yes. Sort of. But it's worth understanding why.

 

Glass half empty

 

The ultraviolet rays from the sun that reach the earth come in two forms: UVA and UVB.

 

UVA makes up most of the UV that reaches the earth’s surface. Its levels don’t vary as sharply with the seasons as UVB, which peaks in summer and is mainly responsible for sunburn. UVA can penetrate glass, which is why pilots, drivers and anyone sitting beside a window for long periods still get some exposure.

 

 

UVA penetrates deep into the skin’s dermis, damaging the proteins that give skin its tension, elasticity and structure. This is ultimately what skin ageing and wrinkles are: a weaker or ‘flimsier’ sub-structure.

 

UVA rays also cause DNA damage to skin cells, giving rise to skin cancer.

 

The surprising bit is that UVA passes through glass, causing damage to the skin even if you aren't outside.

 

That’s why pilots and cabin crew are at greater risk than the general population...

 

...and me on all my flights.

 

...and anybody who sits by a window, beside a windscreen or behind glass as part of their occupation.

 

Glass half full

 

So, if your occupation or regular daily activities see you in any of these situations, bear this in mind.

 

UVA exposure indoors or through glass is much lower than direct sunlight, but over years it can still add up – particularly if you spend long stretches by a window or behind a windscreen. While UV levels drop a lot in winter, using a daily SPF moisturiser is a smart year-round habit for long-term skin health.

 

Even if you’re indoors, applying SPF in the morning takes seconds and keeps you covered without thinking about it. It’s so easy to use an SPF moisturiser at the start of your day. Put it on after you shower and you’re done. What a great habit to start doing now.

 

And if you do happen to be a pilot reading this, you might want to consider something more drastic: like a snapback, sunglasses and a tube of LifeJacket SPF 50+ Sun Gel by the throttle.

 

Thanks for reading.

Billy