Why do the bulbs have a variance in color?Updated 2 months ago

Each FireLight® Infrared Bulb is made from stained red, hard-quartz glass. Due to the manufacturing process, each bulb may exhibit natural blemishes, minor imperfections, or weave asymmetry. These small variations are not considered defects under our warranty, provided they do not affect the performance of the bulb.

While the color may vary, rest assured that it does not impact the functionality or the overall performance of the bulb. The tungsten filament inside the bulb, rather than the colored glass, generates the specific wavelengths. This filament operates at a consistent temperature, producing the same wavelengths regardless of the bulb's appearance. Incandescent bulbs are an analog technology, meaning that when powered on, the tungsten filament emits the FireLight® spectrum for the duration of the bulb's lifespan.  

Please know that each of our bulbs undergoes rigorous quality control testing to ensure they meet the highest standards of performance, safety, and durability.