How Much Sun Is Too Much Sun for Your Skin?

How much sun exposure can skin take before it experiences the negative effects of ultraviolet (UV) light? Well, there’s a simple and a long answer to the amount of sun that may be considered safe for skin health. To help guide you in the right direction for sun protection, consider the following facts.

The Long(-Term) Answer

There are multiple factors that contribute to how your skin may react to sunlight. From skin tone and genetics, to lifestyle factors and the place that you call home, it is impossible to specifically determine how much sun exposure your skin can take before showing immediate visible signs, particularly when some factors are variables. However, it’s important to consider that the damaging effects of UV exposure are cumulative. This means that while skipping sunscreen today may not mean immediately evident damage, the effects will eventually appear. This is because the sun’s rays contain tiny UV photons, invisible to the naked eye, that penetrate skin and cause damage ranging from chemical reactions in the skin’s molecules to a breakdown in collagen and elastin proteins, two key building blocks for optimal skin health. Add up all of these little interactions and, over time, you’re sure to see visible damage, such as pigmentation, visible veins, broken blood vessels, brown spots, and more, regardless of skin tone. Determining which effects you experience is where all of those other factors come into play. For example, some skin tones may be less likely to see brown spots due to higher melanin levels, while those who spend more time at a higher geographical elevation are likely to experience more severe UV radiation, manifesting as multiple severe signs of sun damage.

Sunscreen Isn’t a Shield...

While broad spectrum SPF is encouraged to reduce risk of sun damage, it shouldn’t be applied as an excuse to then spend all your time in direct sunlight during the highest UV exposure times. Instead, sunscreen should be applied each and every day to protect from UV light reflection and other unavoidable instances in which you may be in direct or indirect sunlight. In other words, if you’re planning a beach day, apply (and reapply) ample sunscreen, avoid lounging on the beach midday, and bring an umbrella for shade.

...Neither Is Skin Tone

While it may seem that darker skin is better protected from the sun’s harmful rays due to a higher level of melanin, this isn’t entirely true. The darker your skin is, the more protection it will have from the sun but it will never be fully safe from sun damage. In other words, darker skin isn’t invincible. Sunburns, brown spots, and the deterioration of collagen and elastin proteins over time can lead to prematurely aged skin, regardless of its tone. The sun’s harmful rays will prove more effective in damaging lighter skin tones faster, but there’s still a significant risk to darker shades. For this reason, sunscreen and sun avoidance is imperative.

The Vitamin D Excuse

“But what about the positive effects of sun exposure,” you may ask, “doesn’t it boost vitamin D levels?” Yes, we’ve heard this excuse for skipping the SPF, but we’d say the negatives outweigh the positives. Vitamin D can have a powerful impact on our mental and physical wellbeing. It can fend off depression, lower our risk of diabetes, increase bone strength, and even keep memory loss and some cancers at bay. However, the sun’s rays don’t kickstart the creation of vitamin D in all skin types. For instance, people of color have higher melanin levels present closer to the surface of the skin that generally help to block UV light. What might be considered pre-vitamin D is present in the skin’s second layer. UV light activates this pre-vitamin D, encouraging the creation of vitamin D. So, since UV light is blocked by melanin, those with darker skin tones are less likely to experience the vitamin D-boosting effects of sunlight. The better solution? Include healthy sources of vitamin D in your regular diet—think fatty fish, eggs, or cod liver oil—and add in a vitamin D supplement as needed.

The Bottom Line (or the Short Answer)

For those tough on sun safety, any sun is too much sun for your skin. Of course, this approach really isn’t compatible with most of our day-to-day lifestyles, so the better rule is to simply make applying sunscreen a habit 365 days of the year (366 for leap years!) and avoiding direct sunlight when possible.

Reverse the Visible Damage

For those who are more recent converts to SPF and are looking to repair sun-damaged skin, a custom photofacial treatment plan may do the trick. Powered by intense pulsed light (IPL) technology, these photofacial treatments target pigment under the skin's surface to reduce the appearance of discoloration while boosting collagen and elastin levels. Commonly used to erase vascular marks, spider veins, brown spots, and port wine stains, photofacial treatments can also effectively smoothen out fine lines and wrinkles with a few quick sessions.

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Venus Versa™ is cleared by the FDA for the treatment of benign pigmented epidermal and cutaneous lesions, benign cutaneous vascular lesions, removal of unwanted hair, treatment of acne vulgaris, dermatological procedures requiring ablation and resurfacing of the skin, and non-invasive treatment of moderate to severe wrinkles and rhytides. Venus Versa™ is licensed by Health Canada for the treatment of benign pigmented epidermal and cutaneous lesions, benign cutaneous vascular lesions, removal of unwanted hair, treatment of acne vulgaris, dermatological procedures requiring ablation and resurfacing of the skin, non-invasive treatment of moderate to severe wrinkles and rhytides, and body contouring via skin tightening, circumferential reduction, and cellulite reduction.

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