12 Cool Things to Do With UV Flashlight

Cool Things to Do With UV Flashlight

Have you grown tired of using your UV flashlight for the same old boring tasks? Do you find yourself wondering what else you could be doing with it to make the most out of your investment? Well, we have some good news for you! 

There are plenty of cool and exciting things you can do with a UV flashlight that you most likely haven’t even thought of yet. 

For example, you can detect counterfeit money and IDs, find pet urine stains, and search for scorpions and other nocturnal creatures. 

Plus you can use it to inspect hotel rooms for cleanliness, identify certain minerals and rocks, and even create glow-in-the-dark art. 

The possibilities are endless with a UV flashlight, so let your imagination run wild and see what hidden gems you can uncover.

12 Creative And Cool Things to Do with UV Flashlight

Using a UV flashlight opens up a world of exciting possibilities. Here are some cool things you can do with a UV flashlight:

1. Detecting stains and spills

A UV flashlight can reveal hidden stains and spills, especially when it’s used to reveal what’s invisible to the naked eye.

UV flashlight beams cause certain substances to fluoresce, emitting a distinctive rainbow of light that attracts attention. Consider the following instances:

a. Discovering Pet Urine Stains:

Pet accidents can occur at any time, and finding and eliminating urine stains can be a challenge. Urine, however, contains organic compounds that fluoresce in the presence of UV light. You can easily deodorize and clean carpets, furniture, and floors using a UV flashlight, which quickly identifies urine stains.

b. Unveiling Various Stains:

Some substances are difficult to detect under ordinary illumination, such as food stains, bodily fluids, and cleaning products. However, these elusive stains often become discernible when subjected to UV light. For example, bloodstains may assume a dark or even black appearance when exposed to UV light, rendering them more conspicuous.

2. Authenticate documents

UV flashlights are commonly used to verify the authenticity of certain documents and currencies. This is because many security features are invisible to the naked eye but become visible under UV light.

Here’s how this device can help with document authentication:

a. Watermarks and security threads:

Many driver’s licenses, passports, and identification cards have embedded watermarks and security threads that can only be seen under UV light. It is possible to verify these documents for authenticity and identify counterfeit versions using a UV flashlight.

b. UV-reactive inks:

A few documents, such as event tickets, contain UV-reactive inks that are invisible in normal lighting but glow brightly when exposed to UV light. As a result, this feature helps prevent counterfeiting and allows ticket organizers or security personnel to identify genuine tickets quickly.

3. Identify counterfeit items

UV flashlights are also useful for spotting counterfeit items, as many manufacturers incorporate UV-reactive elements into their genuine products. 

Here’s how a UV flashlight can help in identifying counterfeit items:

a. Currency and banknotes:

Banknotes containing UV-sensitive elements, such as fluorescent thread or ink, emit a particular color or pattern when exposed to UV light. Fake versions may be lacking these features or exhibit differences in their UV response, which makes them distinguishable from a UV flashlight.

b. Identification of security markings:

Electronics, credit cards, high-end merchandise, and collectibles often have UV-visible security markings that are difficult to duplicate. You can identify counterfeit products by using a UV flashlight to verify the presence and authenticity of these markings.

4. Scorpion hunting

Using a UV flashlight for scorpion hunting can be an exciting and adventurous activity. Scorpions have a unique ability to fluoresce under UV light due to certain chemicals in their exoskeletons. By using them at night, you can easily spot scorpions as they emit a distinct glow.

This can be a thrilling experience for nature enthusiasts and those interested in studying arachnids. However, it’s important to exercise caution and avoid disturbing or provoking the scorpions during your hunt.

5. Check cleanliness in hotels or rentals

A UV flashlight can be a handy tool for assessing the cleanliness of hotel rooms or rentals. Ultraviolet light reveals stains and substances that are not visible to the naked eye, such as bodily fluids, or residual substances left behind by previous occupants. 

By scanning surfaces like bedding, upholstery, bathroom fixtures, and carpets with a UV flashlight, you can identify potential cleanliness issues. As a result, you can make informed decisions about the hygiene standards of the place you’re staying in. 

Even though it can help detect contaminants, it does not guarantee the absence of germs or harmful microorganisms.

6. Investigating crime scenes

In forensic investigations, UV flashlights play a crucial role in uncovering evidence at crime scenes. Blood, semen, saliva, and other bodily fluids contain fluorescent properties that become visible under UV light. 

It can be used by forensic experts to detect hidden or obscured bodily fluid traces that might be vital to an investigation. By using this method, fingerprints, blood splatter, or other vital clues can be located that would have been missed under normal lighting conditions.

An important thing to remember is that investigating crime scenes requires professional training and expertise, and the use of a UV flashlight is just one part of what is required.

7. Detection of leaks

A UV flashlight can be used as an effective auto leak detector. UV light makes fluorescent dyes visible in many automotive fluids, such as coolant, oil, and transmission fluid.

You can easily detect leaks in your vehicle’s engine, radiator, hoses, and other components.

When you shine the UV light on the suspected area, any leaks will be revealed by glowing fluorescent traces. This makes it a handy tool for identifying and diagnosing automotive leaks.

8. Identifies cracks in antiques and authenticates glass

When examining antiques or glass objects, a UV flashlight can be a valuable tool for identifying cracks, repairs, or alterations. UV light can reveal hidden flaws or repairs that are not easily visible to the naked eye. 

Genuine glass tends to fluoresce differently from synthetic or modern glass, which can help authenticate the age and origin of an object. 

A UV flashlight can reveal hidden cracks or restoration work in antique glassware or art pieces.

9. Mineral and Gemstone Exploration

UV light can reveal fascinating characteristics and fluorescence in certain minerals and gemstones. By using a UV flashlight, you can explore the unique fluorescence patterns of various minerals and gems. 

Some minerals and gemstones fluoresce under UV light, revealing vibrant colors and patterns. This can enhance your appreciation of their beauty and provide insights into their composition. 

Furthermore, a UV flashlight can help distinguish natural gemstones from synthetic gems. This is because they may have different fluorescence patterns. A UV flashlight can be an exciting and educational tool for observing hidden fluorescence in minerals and gemstones.

10. UV Photography

One exciting use of a UV flashlight is for UV photography. Ultraviolet light can reveal unique and interesting patterns and effects that are invisible to the naked eye. With a UV flashlight and a UV-capturing camera, you can create stunning and surreal images. 

UV photography is particularly popular for capturing fluorescence in subjects like flowers, minerals, and even certain animals. It allows you to explore a whole new world of hidden colors and details that are otherwise unseen.

11. Look for Bed Bugs

UV flashlights are excellent tools for detecting and identifying insect infestations, especially those involving bed bugs. Bed bugs are nocturnal insects that hide in various cracks and crevices during the day, making them difficult to spot with the naked eye. 

However, they leave behind traces of their presence, including excrement, shed skin, and even tiny bloodstains. When you shine a UV flashlight on these areas, bed bug infestations become more apparent as they fluoresce under UV light. This helps you identify the extent of the infestation and take necessary actions for control and eradication.

12. Illuminating Glow-in-the-Dark Items

Another fun use of a UV flashlight is to illuminate glow-in-the-dark items. Many objects, such as toys, stickers, paints, and even clothing, contain materials that can absorb UV light and emit visible light in return. 

By using a UV flashlight in a darkened room, you can make these items glow brightly, creating a captivating and mesmerizing effect. This is particularly entertaining for parties, events, or even simple personal enjoyment. It’s a great way to enhance the ambiance and create a unique visual experience using everyday objects.


Do you need eye protection when using a UV flashlight?

Yes, when utilizing a UV flashlight, it is advisable to don eye protection as a precautionary measure. Long-term exposure to UV light poses a significant risk for ocular health, possibly resulting in irreversible eye damage and even blindness. When using UV flashlights, it is imperative to wear UV-blocking goggles or glasses to ensure maximum safety.

Is a UV flashlight harmful to the skin?

It is important to consider the skin’s reaction to UV flashlights’ emission of ultraviolet light. UV radiation can cause sunburn, premature aging, and an increased risk of skin cancer with excessive exposure. Avoid direct contact with the skin when using UV flashlights. Wearing protective clothing and applying sunscreen are recommended measures to minimize the risk associated with UV flashlights.

How long does a UV flashlight last?

The longevity of a UV flashlight is contingent upon factors such as its quality and frequency of utilization. Generally, a superior-grade UV flashlight can endure approximately 8000 to 10,000 hours of continuous operation. However, if the flashlight is used sporadically or for shorter intervals, it has the potential to persist for multiple years. It is essential to bear in mind that the flashlight’s battery life can also influence its overall lifespan. Therefore, it is recommended to employ high-quality batteries and appropriately store the flashlight when not in active use.