How Long Does It Take to Tan Through a Window


A tan acquired through a window results from ultraviolet rays from the sun penetrating glass and striking your skin. The light reacts with the melanin in your epidermis to produce brown pigments that serve as a form of protection against future UV exposure.

The effects can be slowed by sunscreen, which acts as an umbrella by blocking some UVA/UVB light from entering your body. But once you remove the sunblock and expose yourself to sunlight, it will take less time to get a tan than if you hadn’t worn it. Today I will discuss how long it takes to tan through a window.

How Long Does It Take to Tan Through a Window

Benefits of tanning Through a Window

There are many benefits to tanning through a window instead of inside a home tanning bed. Some of these benefits include:

People love the convenience of using their office or bedroom windows as an alternative to indoor tanning. The best part about this is that you’re already getting your daily dose of vitamin D from being exposed to sunlight every day!

Because you are using natural sunlight is more affordable than paying for an expensive monthly membership with an indoor tanning salon or purchasing pricey sunless products full of chemicals and toxins. In addition, with the use of a sunscreen that dermatologists approve, you can safely help prevent skin cancer without putting yourself at risk of exposure to harmful UV rays. Sunlamps in salons can emit about 50 times more UV rays into your body than natural sunlight.

It is also safer for children to participate in because it’s completely supervised, helping the parent or guardian keep an eye out at all times. Children should always use sunscreen when they’re outside to prevent skin cancer as adults do, but if you’re an indoor tanning salon, you could put them at risk without even realizing it! The outdoor sun produces stronger energy and takes longer to tan than inside a home bed.

Things to Consider When Tanning Through a Window:

1. Wearing Sunscreen Lotion:

Sunscreens can protect your skin from damage that may result in cancer. A sunscreen with an SPF of 15 is the right level to reduce this risk without being too dark for tanners. If you want to go darker, apply a water-resistant, broad-spectrum sunblock with an SPF of at least 30+.

2. Blocking UV Rays:

Make sure that the window you are tanning through filters out ultraviolet light. Ultraviolet light damages your skin, causing premature aging and potential health risks like cancer. Check if the label on the glass blocks UVB rays (which cause burning) and UVA rays (which penetrate deeper into your skin and cause wrinkling).

 Use Glass That Blocks Uvb Rays

3. Avoid the Direct Sun:

Avoid tanning during peak hours (10 am to 2 pm) when ultraviolet light is most intense. It is best to tan at times of day when shade or cloud cover will block the direct sun on your skin.

4. Protect Your Eyes:

Your eyes are very sensitive to UV rays, even if you do not get severe sunburn. Therefore, sunglasses that filter out 99 to 100 percent of ultraviolet rays are essential for protecting your eyes while tanning.

5. Avoid Fake Tanners:

Sunless tanners, such as lotions and sprays, have been known to cause skin reactions. In addition, they do not provide the benefits UV tanning does, such as vitamin D production and more immediate skin darkening.

6. Check for Heat Damage:

Heat damage from direct sun exposure can occur on a window even if it is tinted and blocks out ultraviolet light. Test this by placing your hand on the glass. If it is too hot to keep your hand against the window, then avoid tanning in front of it. Doing so may cause heat rash or burns.

7. Avoid Prolonged Exposure:

When exposed to ultraviolet rays during mid-day summer sun, it takes about 15 minutes for skin to turn pink. Therefore, never tan for more than 15 minutes, and remember to wear sunscreen during prolonged tanning sessions.

Tips for Tanning Through Windows:

1. If you can’t get enough sun exposure at home, it’s better to tan with a tanning lotion rather than going to a tanning salon.

2. When building your own “tan through the window” indoor setup, you should use special film plasters designed especially for windows. Using cling wrap or even cling foil from aluminum food containers is also possible.

3. You can increase your sunlight exposure by using a 100-watt incandescent light bulb.

Sunless Tanners Like Lotions Don't Provide the Benefits Uv Tanning

4. Use an oven thermometer to determine the temperature of your “tanning box.” This ensures that you are not exposed to dangerously high temperatures.

5. Try to remove as many UV rays as possible by using black-out curtains or dark towels on the windows.

Can You Tan Through a Window?

A window can act as a barrier to sunlight. Most sun rays do not pass through the glass, even on a sunny day. For example, one study recorded how much light came through various glass thicknesses on sunny days.

The scientists found that on an average summer day, only about 40 percent of the sunlight’s ultraviolet radiation managed to pass through the glass. And on a cloudy day, only about 10 percent of that sun came through. So that’s the bad news. The good news is that some natural light does get through, so you can tan while sitting in front of a window, even if it isn’t open.

How Long Does It Take to Tan Through a Window?

Prolonged exposure to ultra-violet rays from the sun can lead to sunburn and skin cancer. But you don’t have to step outside for that painful experience if you count on your windows as a reflector. So how long does it take for ultraviolet light (UV) in sunlight to cause tanning through a window?

Hues of Sunlight: The Window Effect

It probably has not escaped your attention that the most desirable residences are located near or facing westward; this area is called the “sunny side of town.” Since intense solar radiation tends to be arriving almost perpendicularly, houses with western exposures are far more likely than those with eastern exposures, which receive indirect light, to generate heat and warm inside.

But sunlight also comes in at more oblique angles, and for every square foot of glass, a house receives about 1% as much energy by the sun’s rays on an overcast day as it does on a clear summer one.

In fact, glass is an efficient emitter of ultraviolet (UV) light that can cause skin damage if you’re not careful. Because UV light is relatively short-range, only materials within 10 to 15 feet from the window receive significant UV exposure. When sunlight strikes windows – especially those with reflective surfaces like mirrors or aluminum blinds – they can emit nearly 98% of their total UV rays through the glass surface.

This means visible daylight through a window transmits minimal UV light, which only occurs at the window’s outermost edges.

This means tanning through a window is not likely to cause skin damage. As one might expect, colors transmit better than white or off-white (cream) surfaces since they absorb less light. In addition, the glass used in windows generally does a good job of filtering out the most visible light from the sun; it transmits half as much as clear glass and ranges from 7% to 14% as much visible light transmission as standard safelights (which have amber lenses).

This low degree of transmissivity explains why you can read comfortably near your windows, even on a bright day, without squinting. A thin film of sunscreen should also surround your eyes.

 Skin damage

But the Sun is Dangerous!

Yes, it can be. The worst place to work or play, especially with pale skin and light eyes, is anywhere facing east – that’s where the sun rises. People in those locations tend to get jittery about health hazards because of all the scary warnings they heard as children about not staying outdoors too long without sunscreen. That’s why some white-skinned people wear hats while gardening at this time of day.

Sun damage from windows can occur if you stay close enough for five minutes or more on a sunny day; however, your body will tingle (feel hot) before any real damage occurs. Warnings are significant for infants and toddlers with thin skin who cannot protect themselves. Even people with darker complexions can be hurt by exposure to UV radiation, especially if they are sensitive or have a chronic disease such as lupus, hypertension, diabetes mellitus, psoriasis, and various skin infections.

A Note On Prevention

Sunscreen Habits Giving You Cancer

Your foundation in sun protection will stand you in good stead for years to come if you build upon it properly. In the article Are Your Sunscreen Habits Giving You Cancer? I discussed how even brief exposure to unprotected skin during early childhood could result in melanoma or other skin cancers decades later. Try to get all family members into this mindset, including kids; I’m going to stress that again because of just how important habits are in our health (and life). So get yourself and everyone else on board with wearing sunscreen whenever you go out under the sun, no matter what!

Frequently Asked Questions

Can You Still Get a Tan Through a Window?

Yes, you can still get a tan through a window. However, it is important to use the proper window treatment so that the sun does not damage your skin.

Some things to keep in mind when using a window for tanning include:

• Use sunscreen every day when going outside to avoid getting sunburned.

• Wear clothing that covers as much skin as possible and avoid wearing anything that will make you sweat or stick to the skin.

• Avoid exposure to the sun during peak hours (between 10 am and 2 pm) because this is when the sun’s rays are strongest.

• Make sure your window is clean and free of debris or dust so that the sunlight does not reflect off it and into your eyes.

Make Sure Your Window is Clean

Can You Get Vitamin D Through Window?

Yes, you can get vitamin D through the window. However, it is important to note that the amount of vitamin D you receive through the window will be minimal.

The best way to get vitamin D is by exposing your skin to sunlight. This is the most natural way to obtain vitamin D and the easiest way to avoid skin cancer.

Is It Ok to Get Sun Through a Window?

Using common sense, it is generally safe to get sun exposure through a window. You should avoid the sun’s strongest rays (the midday sun) and wear sunscreen if you are going to be outside for an extended period of time.

If you are going to be outside for a shorter amount of time, it is ok to get a little sun exposure through a window. Make sure that an opaque material covers the window so you don’t get too much sunlight.

Can You Get Energy From the Sun Through a Window?

No, you cannot get energy from the sun through a window. The sunlight that enters your home is too bright and intense for your skin to convert into energy.


If you sunbathe through your windows and it makes you feel self-conscious because of the risk of skin damage from sunlight – there is no way around that concern. First, use window treatments to block out most direct sunlight; this includes light reflected from mirrors and aluminum blinds (removable films on glass cause glare).

Block Out Most Direct Sunlight

If you absolutely must tan directly in front of a window, wear sunscreen with an SPF of 15+. Or better yet, simply enjoy glorious rays of natural light through the windows without risking your skin.I hope you have learned all about how long does it take to tan through a window. Thank you and have a nice day!

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