Most of us know that spending too much time in the sun can cause sunburn, but the effects of ultraviolet (UV) radiation go way beyond temporary redness and sore shoulders.
Over time, repeated exposure to the sun can cause lasting changes to your skin, leading to wrinkles, uneven pigmentation and a loss of firmness.
This process is known as photoaging, and unlike natural skin ageing, photoaging is largely caused by environmental factors and is considered one of the biggest contributors to visible changes in the skin.
Although we can't stop the natural ageing process, understanding how photoaging develops can help you protect your skin and support a healthier-looking complexion for years to come.
Understanding Photoaging
Photoaging refers to the premature ageing of the skin caused by repeated exposure to ultraviolet (UV) radiation from the sun or artificial sources such as tanning beds.
Everyone's skin naturally changes with age. As we get older, collagen and elastin production gradually decline, cell turnover slows, and skin becomes thinner. This is known as intrinsic ageing and is influenced largely by genetics.
Photoaging, sometimes called sun ageing skin, is different. It is a form of extrinsic ageing, meaning it results from external factors.
While pollution, smoking and lifestyle choices can all affect skin health, long-term exposure to UV radiation is considered the leading cause of premature skin ageing.
The effects of photoaging develop gradually over many years. Small amounts of sun exposure accumulated over decades can have a significant impact on the skin's appearance and structure.
How Much of Skin Ageing Is Caused by the Sun?
Research suggests that sun exposure may account for up to 80% of visible signs of facial ageing, particularly in people with lighter skin who have experienced significant lifetime UV exposure. The exact contribution varies depending on genetics, skin type, lifestyle and cumulative sun exposure.
Sun exposure accelerates many of the visible changes people associate with ageing.
Fine lines and wrinkles may appear sooner, skin can lose some of its firmness and elasticity, and changes such as uneven skin tone, age spots, rough texture and a dull complexion often become more noticeable over time.
These signs of photoaging typically develop in areas most frequently exposed to the sun, including the face, neck, chest, shoulders, and hands.
How Does Sun Exposure Age Your Skin?
Sunlight contains different types of ultraviolet radiation, but UVA and UVB rays have the greatest impact on skin health.
UVA Rays
UVA rays penetrate deep into the skin, reaching the dermis where collagen and elastin fibres are found.
Over time, repeated exposure contributes to the breakdown of these structural proteins, reducing the skin's firmness and elasticity. This can lead to wrinkles, sagging skin, loss of elasticity, and thinner-looking skin
UVA rays are present year-round and can pass through clouds and glass, making daily sun protection important even when it doesn't feel particularly sunny.
UVB Rays
UVB rays primarily affect the skin's outer layers and are responsible for sunburn.
They can also damage the DNA within skin cells, increasing the risk of skin cancer.
While UVB rays are best known for causing burns, they also contribute to premature skin ageing by triggering inflammation and damaging healthy skin cells.
Oxidative Stress
UV exposure also increases the production of unstable molecules known as free radicals.
When free radicals outnumber the body's natural antioxidant defences, oxidative stress occurs.
This process can damage proteins, lipids and DNA within skin cells, contributing to collagen breakdown and accelerating visible signs of ageing.
Signs of Photoaged Skin
Photoaging affects everyone differently, and the signs often develop gradually over many years of cumulative sun exposure.
One of the earliest changes people notice is the appearance of fine lines, which can deepen into more pronounced wrinkles over time.
Skin may also lose some of its firmness and elasticity as collagen and elastin break down, while uneven pigmentation and age spots become more noticeable.
Some people develop a rough or leathery skin texture, alongside dryness, a dull complexion, or visible blood vessels (sometimes referred to as broken capillaries).
These changes are most commonly seen on areas that receive regular sun exposure, including the face, neck, chest and hands.
Is a Tan a Sign of Healthy Skin?
Many people associate tanned skin with health, but a tan is actually a sign that your skin has been exposed to UV radiation.
When your skin is exposed to the sun, it produces more melanin as a protective response against DNA damage.
Although this increased pigmentation may make the skin appear darker, it does not prevent photoaging or eliminate the risk of further UV damage.
Similarly, using tanning beds exposes the skin to concentrated UV radiation, which can accelerate photoaging and increase the risk of skin cancer.
Can Photoaging Be Prevented?
While no one can stop the natural ageing process, there are plenty of ways to help reduce the effects of photoaging.
One of the most effective steps is wearing a broad-spectrum sunscreen every day. Daily SPF helps protect against both UVA and UVB rays, even during cloudy weather.
Other helpful habits include:
● Seeking shade during the middle of the day when UV levels are highest.
● Wearing protective clothing, hats and sunglasses.
● Avoiding tanning beds.
● Not smoking, as smoking also accelerates collagen breakdown.
● Eating a balanced diet rich in fruits and vegetables.
● Staying well hydrated.
These simple measures can help reduce cumulative UV damage over time.
Can Existing Photoaging Be Improved?
Although existing sun damage cannot always be completely reversed, there are steps you can take to support healthier-looking skin and help reduce the appearance of photoaging over time.
A consistent skincare routine, daily broad-spectrum sunscreen and a healthy lifestyle all play an important role in protecting your skin from further UV damage.
Supporting your skin from within may also form part of a balanced approach to skin health.
Nutrients such as vitamin C contribute to normal collagen formation for the normal function of skin, while vitamin A contributes to the maintenance of normal skin.
Hyaluronic acid is well known for supporting skin hydration, helping the skin appear smoother and more supple.
Arella's Vegan Liquid Collagen combines VeCollal® with vegan-friendly hyaluronic acid, vitamin C, vitamin A, biotin, niacin and Panax ginseng in one convenient daily supplement.
Together, these ingredients have been carefully selected to support your everyday wellness routine and maintain healthy skin.
While supplements cannot reverse photoaging or replace daily sun protection, they can complement a healthy lifestyle and skincare routine as part of an overall approach to looking after your skin.
The most important step, however, is preventing further damage. Consistently protecting your skin from UV exposure can help slow the progression of photoaging and support healthier-looking skin over time.
Protect Your Skin Today for Healthier Skin Tomorrow
Photoaging develops slowly over many years, making it easy to overlook the long-term effects of daily sun exposure. However, small habits can make a real difference over time.
Wearing sunscreen, avoiding excessive UV exposure and looking after your overall wellbeing can all help support your skin as you age naturally.
It's never too early – or too late – to start protecting your skin. By understanding what photoaging is and taking steps to reduce unnecessary sun exposure, you can help maintain healthier-looking skin.
Ready to care for your skin from the inside out? Explore Arella's range of supplements and discover products designed to complement your daily skincare routine.
