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Can You Tan Through a Window?: Sun Myths Debunked

Find out whether you can tan or burn through a window and the answers to other sun related myths.

CAN YOU TAN OR BURN THROUGH WINDOWS?

The simple answer is yes, you can both tan and burn through windows. A window does filter out some UV rays but not all of them, leading to the misconception that they offer complete protection. Windows only provide partial shielding, leaving individuals vulnerable to sun damage through glass. 

This article will help to dispel more common myths surrounding sunburn and tanning to ensure you safeguard your skin in various sun-related scenarios.
young woman using Nivea Sun UV Face Specialist face cream

Can You Tan Through A Window?

In short, yes it is possible. UVA rays, responsible for tanning, can penetrate through most windows and so contribute to tanning and skin damage. However, the extent of tanning will likely be less intense compared to direct outdoor exposure. It's important to remember that prolonged exposure to UVA rays, indoors or outdoors, can still harm your skin.

 

Can You Burn Through A Window?

Again the short answer is yes, although it is quite rare, you can burn through windows in case of prolonged exposure. Although you may not immediately observe sunburn, it can frequently be delayed. 

In addition, a prolonged exposure to sunlight through glass can lead to other skin issues such as skin damage, premature ageing, and an increased risk of skin cancer. It's important to use protective measures if spending extended periods near windows, to minimise potential damage from UVA rays.

Can you tan or burn through car windows?

Yes you can. The glass used in car windows is designed to filter out UV radiation, however it does a far from perfect job. The front windshield typically blocks most UVA and UVB radiation, whilst the sunroof and windows typically let more through - meaning you are more likely to tan or burn from above or to the side than from head on.

A study from 2016 has shown that the car windshield blocks up to 96% of UVA rays vs. only 71% blocked by the drivers side window*. There are also multiple studies that show individuals who spend a lot of their life driving have an increased risk of UV-induced skin damage.

*Brian S Boxer Wachler, Assessment of Levels of Ultraviolet A Light Protection in Automobile Windshields and Side Windows. JAMA Ophthalmol. 2016 Jul 1;134(7):772-5.

VITAMIN D PRODUCTION FOLLOWING SUN EXPOSURE BEHIND WINDOWS

While sunlight is crucial for Vitamin D production, UVB rays responsible for this process are largely filtered out by glass windows. Although sitting by a window may boost your mood, it is not an efficient way to increase Vitamin D sufficiently. 

3 FACTORS THAT INFLUENCE TANNING OR BURNING THROUGH A WINDOW

The risk of the sun having an impact on your skin indoors hinges on a number of factors, the main ones being:
young woman using Nivea Sun face cream
  1. The type of glass: 
    The amount of UV radiation that can penetrate the window pane will depend on the type of glass and glazing. Penetration will be different for single-glazed and double-glazed windows, and for tinted and untinted windows, for example.

    - Single Glazing:
    Allows more UV radiation to penetrate through the glass, increasing the risk of sunburn and skin damage for individuals near the window.
    - Double Glazing: 
    Offers better UV protection by reducing the amount of UV radiation that can penetrate through the glass, providing a safer (but not completely safe) environment for occupants near the window.
    - Window tints or films:
    Specific tints or films can be applied to windows to reduce the amount of UV rays that can pass through, providing a higher level of protection that standard glass
  2. Time spent next to a window: 
    The longer the amount of time spent in the sun's gaze, the increased chances are of the sun impacting your skin.
  3. Skin Type:
    The quantity and the type of melanin your skin may produce can affect sensitivity toward UV exposure.

CAN YOU TAN THROUGH CLOUDS?

You can still both tan and burn through clouds. Whilst they may provide some natural shade, it's a common myth that UV rays are entirely blocked. In reality, they only filter out some UV rays, meaning there is still a potential risk for sun-induced skin damage on cloudy days.

PEOPLE AT RISK OF SUN DAMAGE THROUGH WINDOWS

1. Driving for a living or long road trips

People who spend a significant amount of time driving, such as truck, delivery or taxi drivers are at an increased risk of sun damage through car windows. All spend long hours on the road with significant sun exposure and are advised to reapply sunscreen regularly due to prolonged sun exposure through windows. Particular attention should be paid to the drivers side forearm and face as these are usually the most exposed.

mother and child

2. Kids in the back seat of the car

Children in the back seat should also have sunscreen applied before the journey, especially if they will be sitting near windows. It is advisable to reapply sunscreen at least every 2 hours on a long car journey. 

The NIVEA SUN Babies and Kids Sensitive Protect Spray SPF 50+ is a highly effective, water-resistant sunscreen that is fast-absorbing and fragrance-free. The soothing formula with Organic Chamomile extracts, is specially designed for the sensitive skin of children and babies. This spray protects from UVA and UVB rays responsible for sunburn, and helps reduce the risk of skin reactions to the sun.

Another sunscreen option is the NIVEA SUN Kids Ultra Protect & Play Lotion SPF 50+ providing long-lasting protection against UV rays while being extra water resistant. The easy-to-apply formula is perfect to apply to kids skin before jumping in the car down to the beach or lake on a sunny day.

3. Working in proximity to windows

Those working from home or in glass buildings can be exposed to significant amounts of sunlight, especially during certain times of the day. Those who work near windows should apply sunscreen to exposed skin or use window coverings to reduce UV exposure.

Facts Overview

Tan Through A Window

Can You Get a Tan Through A Window:
You can still get a tan through a window as glass doesn't entirely block the sun's rays responsible for tanning. 

Factors Influencing Indoor Tanning:
Indoor tanning effectiveness varies based on glass type, exposure time, and skin type.

UV Rays and Their Interaction with Glass:
Both UVA and UVB rays are partially blocked by glass however, they can still sometimes cause sunburn or a suntan in case of prolonged exposure. Sunscreen should be worn as a protective measure to help prevent skin damage caused by UV rays.

7 SUN-MYTHS DEBUNKED

  1. Myth 1: You can repair the damage done by sunburn with aftersun products
    While aftersun products can provide relief by moisturising and cooling the skin, it's important to note that they do not reverse the skin damage caused by sunburn. 
  2. Myth 2: The sun is strongest when it’s hottest
    The intensity of the sun's UV radiation is not solely determined by the temperature. The sun is typically strongest during the solar noon, which is when the sun is at its highest point in the sky. This doesn't necessarily coincide with the hottest part of the day.
  3. Myth 3: Tinted windows provide complete UV protection
    Tinted windows reduce visible light and heat but don't guarantee complete UV protection. Check tint specifications, as some UV radiation may still penetrate.
  4. Myth 4: Sunscreen lasts all day
    Sunscreen lasting all day is a common misconception that can lead to increased long-term skin damage. Sunscreen is most effective when applied consistently throughout the day.
  5. Myth 5: Sunscreen doesn’t expire
    Sunscreens have an expiration date. You can check your sunscreen for a small open jar icon on the packaging, with the number of months the product can be used after opening.
  6. Myth 6: People with darker skin don’t get sunburnt
    All types of skin can get sunburnt, including darker skin. People with lighter skin tones will appear red, sore, and swollen. Darker skin tones might not change colour but may feel irritated, tender, itchy, and sore.
  7. Myth 7: When you have sunburnt once, the damage is done
    Experiencing sunburn doesn't guarantee the onset of skin cancer. This heightened risk stems from the accumulation of unrepaired damage over time. Safeguarding your skin by seeking shade, covering up, and applying sunscreen can minimise your risk as much as possible.

Sun Safety Measures

Protecting the Skin During Sun Exposure:

Protective clothing: clothing is your first line of defence. Hats, sunglasses, and lightweight, long-sleeved clothing can shield you from UV rays.

Timing matters: try to avoid the sun's peak intensity between 10 a.m. and 4 p.m. If you're outdoors, seek shade whenever possible and reapply sunscreen throughout the day.

Body Sunscreen: Protect your body with sunscreen, especially the body parts exposed to the sun often e.g. your hands and neck. 

Face sunscreen: apply face sunscreen daily as a proactive measure to safeguard your skin both indoors and outdoors. Discover NIVEA Invisible Daily Fluid SPF 50+, enriched with Licochalcone, a powerful antioxidant, while also being an ultra-light fluid formula, non-greasy, and leaving no white residue.

young woman using NIVEA SUN Protect & Moisture Lotion SPF 50+

What to Do in Case of Sun Exposure:

Cool the Skin: 
Take a cool bath or shower to help soothe the skin. Avoid using harsh soaps or scrubbing, as this can cause further irritation.

Apply Aftersun: 
After cooling the skin, apply a gentle aftersun moisturiser such as NIVEA After Sun Spray to soothe your skin and offer relief after the sun to help hydrate and soothe the signs of a skin damaged by the sun. Avoid products containing petroleum jelly or a high proportion of fatty susbtances as they can trap heat and make the sunburn worse.

Stay Hydrated:
Drink plenty of water to help prevent dehydration, which can worsen the effects of overexposure to the sun. Avoid alcohol and caffeine, as they can further dehydrate the body.

 

Take Pain Relievers or anti-inflammatories:Over-the-counter pain relievers and anti-inflammatories can help alleviate pain and reduce inflammation associated with sun exposure. Always follow the instructions on the packaging and consult your doctor as appropriate.

Protect from Further Sun Exposure:
While your skin is healing, it's crucial to protect it from further sun exposure. Stay in the shade, wear protective clothing, and apply sunscreen with a high SPF to any exposed skin when going outside. 

Go to the Emergency Room
In cases of severe overexposure to the sun, go directly to the hospital for professional medical attention.


PROTECT YOUR SKIN FROM SUN EXPOSURE WITH NIVEA SUN

Daily sun protection is essential to shielding the skin from the sun's harmful UV rays. Whether you are exposing skin to sunlight through windows or are enjoying a day at the beach, using sunscreen helps to minimise the impact of sun damage on skin.

The extensive range of NIVEA SUN care products contains multiple application formats with SPF’s up to 50+. From traditional sun cream lotions that nourish and hydrate skin, such as the NIVEA SUN Protect & Moisture Lotion SPF 50+, to face specific solutions that also help to target skin concerns, such as the NIVEA SUN UV Face Specialist Dark Spot Control Fluid SPF50+

Uncover NIVEA SUN Daily Protect SPF 50+, enriched with antioxidants such as Liquorice extract and Vitamin E to help protect the skin and Hyaluronic Acid for smooth-looking skin, in a utlra-lightweight formula for normal to combination skin, ideal for daily application.

Summary

Dispelling myths surrounding when you are vulnerable to the sun’s rays is crucial for skin safety. Even though windows and clouds offer partial protection from UV rays, it is possible to tan or sunburn in case of prolonged exposure. In fact, most of the UVB is blocked by windows, but the UVA rays can penetrate through more easily, This is the reason why it is usually recommended to take protective measures such as wearing daily sunscreen or protective clothing, when by windows. 

FAQ's

Can you burn through glass?

Even if it's not very common, you can get a sunburn through glass. Chances are reduced vs. being in direct sunlight, however it is advised to take preventative measures such as applying sunscreen, because you can also suffer skin damage from UVA rays, which will not be visible until years later.

Can you tan through clouds?

Depending on the cloud cover, a proportion ranging from 50-90% of UV rays can penetrate through clouds, therefore reaching your skin. Even if you can’t feel the sun on your skin, the UV rays that lead to tanning are still present. These also increase the risk of skin damage.

Can UV rays pass through double glazing?

A set of double-glazed windows will filter out a big part of UVB rays and about a third of UVA rays, meaning it will take longer to tan. However, because of the passage of harmful UVA rays, the risk of sun damage is still present so make sure to take preventative measures.

Can you get a tan in the shade?

It is possible to tan or burn in the shade. In fact, you don't have to be in direct and full sunshine to get a tan. By reflecting on certain surfaces, UV light can reach onto you, then your skin is absorbing it. This is particularly the case if you are near the sea, near a swimming pool or when there is snow.

What time of day to avoid the sun?

Spend time in the shade when the sun is strongest. In the UK, this is between 11am and 3pm from March to October.