This picture of a truck driver - and the damage prolonged exposure to the sun did to the left side of his face - will make you never want to leave home again without smothering your face in SPF.

Published in the New England Journal of Medicine, the 69-year-old’s portrait is notable because only one side of his face was exposed to the sun, due to the nature of his job. As a result, it's possible to see how his entire face could have looked if he'd worn sunscreen.

According to the publication, upon examination of the left side of his face, the findings were “consistent with the Favre-Racouchot syndrome of photodamaged skin, known as dermatoheliosis.”

Essentially, the left side of the man’s face appears severely wrinkled because, as a truck driver of 28 years, it was constantly exposed to Ultraviolet A (UVA) rays transmitted through the truck window, whereas the right side was covered - and relatively unharmed.

In this case, the man has unilateral dermatoheliosis - which means the skin on the left side of his face has gradually thickened from the sun exposure.

Congenital skin conditions presented in empowering photography exhibit Show all 10 1 /10 Congenital skin conditions presented in empowering photography exhibit Congenital skin conditions presented in empowering photography exhibit Gemma Whyatt On Thursday, a series of photos titled “How Do You C Me Now?” were exhibited at the Oxo Tower Wharf in London to inspire the world “to love the skin you are in” Brock Elbank/SWNS Congenital skin conditions presented in empowering photography exhibit Frederik Port The models featured in the photos, taken by London-based photographer Brock Elbank, live with a potentially life-threatening skin condition called congenital melanocytic naevus (CMN) Brock Elbank/SWNS Congenital skin conditions presented in empowering photography exhibit Rosabella Harrison According to the National Organisation of Rare Disorders (NORD), CMN are visible pigmented proliferations in the skin that are present at birth that can cover up to 80 per cent of the body. CMN are a known risk factor for melanoma - a type of cancer that develops from the pigment-containing cells Brock Elbank/SWNS Congenital skin conditions presented in empowering photography exhibit You Kang Wu “CMN can be light brown to black patches or plaques, can present in variable ways, and cover nearly any size surface area or any part of the body,” NORD states Brock Elbank/SWNS Congenital skin conditions presented in empowering photography exhibit Callum White Small to medium CMN are predicted to occur in more than one in a 100 births while large and especially giant CMN (covering a a predicted diameter at adult age of at least 20 cm on the body) are estimated to present themselves in around 1 in 50,000 births Brock Elbank/SWNS Congenital skin conditions presented in empowering photography exhibit Yulianna Yuseff The exhibition, which is being supported by UK CMN charity Caring Matters Now, has been presented throughout 30 different portraits and aims to challenge "conventional perceptions of beauty" Brock Elbank/SWNS Congenital skin conditions presented in empowering photography exhibit Alkin Emirali A spokesperson from Caring Matters Now says: “People with CMN often feel isolated due to the rarity of the condition and have to deal with negative comments because of their visible difference, resulting in low self-esteem" Brock Elbank/SWNS Congenital skin conditions presented in empowering photography exhibit Agnieszka Palyska Several of the individuals photographed for the exhibition have never shown their birthmarks in public before. Brock Elbank/SWNS Congenital skin conditions presented in empowering photography exhibit Mariana Mendes “In a world where people work hard to stand out from the crowd, 'How Do You C Me Now?' aims to celebrate diversity and educate the public about this rare condition," a spokesperson from the charity added Brock Elbank/SWNS Congenital skin conditions presented in empowering photography exhibit Gemma Whyatt Admission to the exhibition is free and will run for 10 days before touring the world Brock Elbank/SWNS

Capable of penetrating glass windows and clouds, unlike UVB rays, UVA rays “penetrate the epidermis and upper layers of the dermis,” according to the journal, which published the findings in 2012.

The chronic exposure also resulted in the destruction of the skin’s elastic fibres - which explains the deep wrinkles and an aged appearance.

Unfortunately, it is almost impossible to avoid UVA rays, as UVA rays account for “up to 95 percent of the UV radiation reaching the Earth's surface,” according to Skincancer.org

(New England Journal of Medicine)The jarring effects of UV radiation

And, while it was originally thought that ultraviolet B (UVB) rays are more commonly linked to higher rates of skin cancer, according to the publication, “UVA has also been shown to induce substantial DNA mutations and direct toxicity, leading to the formation of skin cancer.”

Although the damage has already been done, doctors eventually recommended the use of sunscreen and topical retinoids to the man.

It was also recommended that he gets periodic monitoring for skin cancer, according to the journal.

Reminder: use sunscreen even when it’s cloudy.