Retrobrighting is a chemical mixture used to remove yellowing from ABS plastic computer and electronics cases, including computers that were manufactured by Commodore and Apple in the 1980s and 1990s, and various video game consoles and cartridges. Yellowing is caused by both bromine and exposure to ultraviolet (UV) light. Many of the ABS plastics used in consumer electronics devices are typically “brominated” combined with bromine as a fire retardant—to meet fire safety standards. There is still some debate over the long-term effectiveness of this technique. Some have discovered the yellowing reappears, and there is discussion of factors that may result in this happening. There are also some concerns that the process weakens the plastic. Anyway, Youtube Vlogger Jan beta is taking a closer look using Retrobright on his Commodore Amiga 1200.