The facts
The FDA sent warning letter MARCS-CMS 738562, dated September 22, 2026, to Joo-Young Yoon, CEO of Unilam Co., LTD in Ulju-gun, Ulsan, South Korea. The letter followed a May 18 through 22, 2026 inspection of the company's SUV 600-800/KT/GYU UV Sunlamp manufacturing, which the agency says left the devices adulterated under section 501(h) of the Food, Drug, and Cosmetic Act. A June 15 response from Young Boo Cho was reviewed and found inadequate.
The risk management was the first joke the FDA wrote for us. Unilam's DFMEA covered exactly 4 risk line items, and the risk controls identified "rely almost entirely on labeling or on actions only able to be undertaken by the downstream sunlamp bed manufacturer, such as use of a timer or UV filter". The DFMEA never addressed foreseeable risks "such as chemical exposure in the event of lamp breakage." So the plan for a shattered lamp was a sticker.
Then the testing. The firm had no documented validation plans, and its quality manager told the FDA the firm has no design control procedure at all. A lifetime test run after a quartz tube supplier change included no results for UVC emissions over the 800-hour expected lifetime of the device. The Integrating Sphere test equipment (OL770) used to measure UVC (200–260 nm) and UVB (260–320 nm) had calibration acceptance criteria "based solely on the visible light spectrum (340–780 nm)". After a fire at the factory in 2021, the firm generated a calibration record after cleaning but performed no adequate requalification of the equipment. And the company had no written agreements requiring its suppliers of quartz tube, mercury, and krypton to notify it of product changes before they hit the lamps.
Our take
Here's the fucking pitch: you're making a machine that shoots concentrated ultraviolet radiation at human skin, and you check its output with a tool you only bothered to calibrate for visible light. That's not a manufacturing oversight, that's a suicide pact with extra steps. Unilam's entire operation is a clown car driving straight into a regulatory brick wall, and the FDA had to send a letter to explain that 'designed by vibes' is not a recognized medical device standard.
Let's start with their risk management, a document so fucking anemic it could be printed on a Post-it. Four line items. Four. The plan for a shattered lamp full of mercury and krypton was a fucking sticker. Their genius risk control was slapping a label on it and praying the bed manufacturer down the line remembered to use a timer. This is the quality philosophy of a toddler hiding a broken vase under the couch. They never even wrote down what to do when their cancer-ray tube explodes, because apparently that's a surprise outcome for a device made of glass and toxic gas.
Then there's the testing, which is where the real comedy gold pours out of their ass. They ran an 800-hour lifetime test on a lamp and didn't bother to check the UVC output over the 800-hour lifetime. What the fuck were they measuring? The lamp's mood? Its commitment to the bit? This is like baking a cake for eight hours and only checking if the oven light works. Their calibration strategy for the UV meter was to set it against visible light and call it a day, which is like tuning a Geiger counter with a fucking banana.
The pièce de résistance is the 2021 factory fire. After the flames died down, their idea of requalifying the fire-fucked test equipment was to clean it and write a new number on a form. That's it. They treated a scorched piece of precision instrumentation like a dirty plate. This is a company that operates with the technical rigor of a stoned teenager fixing a router by kicking it. They have no design control, no validation plans, and no agreements with their suppliers of mercury and quartz to tell them about changes. The whole supply chain is held together by hope and fucking spit.
Joo-Young Yoon and his crew of absolute cunts are selling ultraviolet tanning beds with a quality system that makes a back-alley tattoo parlor look like NASA. The FDA's warning letter is a masterpiece of understatement, documenting a cascade of failures so profound it reads like a script for a workplace satire. These dickheads are out here gambling with people's skin health because they couldn't be arsed to calibrate a machine for the actual fucking job it does. It's breathtaking, weaponized incompetence.
