10 Best Blacklight Flashlights 2025 in the United States

The Vansky UV Flashlight Black Light is a versatile tool designed to reveal invisible stains and perform a wide range of detection tasks. It emits UV light at a wavelength of 395nm, which is suitable for detecting pet urine, food stains, and other unwanted substances on various surfaces. With 51 high-quality LEDs, it offers strong light output that can illuminate a substantial area, making it effective for tasks like scorpion spotting, currency authentication, and resin curing.

The flashlight is powered by three AA batteries (not included), which is convenient but might require frequent replacements depending on usage. Its aluminum build ensures durability, and the compact, lightweight design makes it highly portable, fitting easily into pockets or bags for on-the-go use.

Although it comes with a one-year manufacturer warranty, a potential drawback is the need for regular battery replacement, which could be an inconvenience for some users. The Vansky UV Flashlight is well-suited for pet owners, outdoor enthusiasts, and anyone needing a reliable UV light for various inspection tasks.

The GearLight UV Black Light Flashlight S100 is a compact and portable UV flashlight that is well-suited for tasks such as detecting stains, pests, and counterfeit items. Its small size (5.25 x 0.5 x 0.5 inches) and lightweight construction (1 ounce) make it easy to carry around, and it conveniently fits into a pocket or clips onto a belt or bag.

The flashlight is powered by 2 AAA batteries (not included), which are easy to find and replace, but users should be aware that the battery life could vary depending on usage. The UV light output is effective for various detection purposes. The build quality is robust, made from military-grade aluminum, making it durable enough to withstand drops and brief water exposure. This makes it suitable for rough handling and use in different environments.

One potential drawback is the absence of included batteries, which means an additional purchase is necessary to start using the flashlights. Additionally, the small size, while beneficial for portability, might mean a narrower beam compared to larger UV flashlights. Users who need a compact, durable, and portable UV flashlight for general inspection tasks and detection of invisible stains or counterfeit items will find the GearLight S100 to be a practical choice.

The LE Small UV Blacklight Flashlight is a compact and portable tool designed to help detect animal urine, food stains, and authenticate currency and official documents. With a 395nm wavelength, it effectively illuminates details invisible to the naked eye, making it an essential utility for pet owners and those needing a reliable detection tool. The flashlight runs on AAA batteries, which are included, ensuring longer usage time compared to similar-sized UV flashlights.

It offers a runtime of approximately 2 hours and 13 minutes, which is decent for intermittent use but might require frequent battery replacement for extended operations. Durability is a key strength, featuring impact resistance and an aluminum alloy build with a special non-slip rubber design. This makes it suitable for rugged environments and light rain, thanks to its IPX4 waterproof rating. The flashlight's compact size, lightweight nature, and convenient portability mean it can easily fit into a pocket or bag for on-the-go use.

This flashlight serves well for casual and pet-related use and provides good durability and portability features.