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 uvBeast New V3 365nm Mini is a compact, high-powered black light UV flashlight designed for users seeking portability without sacrificing performance. One of its standout features is the use of a 365nm UV LED, which is considered the gold standard for UV lights due to minimal visible light leakage, providing high-quality UV output for professional and commercial use. The flashlight's small size (just over 2 inches in length) and lightweight (3.17 ounces) make it highly portable, fitting easily into a pocket or bag.

Additionally, it boasts an upgraded UV power, wider beam, longer working time, and a rechargeable battery, addressing common user frustrations with ease of use and reliability. The convenient double-click switch helps prevent accidental activation, adding to its practical design. However, potential users should be aware that the flashlight requires a specific charging cable, which may be an inconvenience if misplaced.

Its aluminum build ensures durability, making it suitable for outdoor use, and it includes a 1-year manufacturer warranty for added peace of mind. With a strong customer rating of 4.3 out of 5 stars from 2,734 reviews, this flashlight is well-regarded for its performance and user-friendly design.

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.