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Whitening masks or other whitening products, especially those with particularly obvious whitening, are likely to contain fluorescent whitening agents.

Fluorescent whitening agent is a fluorescent dye and a complex organic compound. Its characteristic is that it can produce blue fluorescence, which can make substances visible to the naked eye very white.

Take a facial mask as an example. To test whether the facial mask contains fluorescent whitening agent, open the package of the facial mask, then place it under the "ZF-C three-purpose UV analyzer" and use ultraviolet light to irradiate the facial mask to see if it contains Does it emit bright blue light? If so, it means the mask contains fluorescent agents. If you do not have a UV analyzer, you can use a UV flashlight, UV currency detector/pen, etc.

The mask containing fluorescent agent shows a very large area of ??bright blue when illuminated by ultraviolet light. The fluorescent agent component will adhere to the mask liquid even slightly, and the hand holding the mask will also fluoresce. After rinsing the hands three times with clean water, the fluorescent agent on the hands still emits a strong bright blue light under ultraviolet light and is almost not washed off. I washed it with hand sanitizer 3 times. After exposure, my hands also emitted blue light, but the effect was slightly better than that of water. Washing with facial cleanser is almost as effective as hand sanitizer, but it cannot completely wash away the fluorescence remaining on your hands...

The harm of fluorescent agents to the human body:

Fluorescent agents are not Like general chemical components, they are easily decomposed, but accumulate in the human body, producing many harmful effects and greatly reducing human immunity; fluorescent agents bind to proteins outside the wound and hinder wound healing; fluorescent agents can cause human cells to There is a tendency for variability, and its toxicity accumulates in the liver or other important organs, becoming a potential carcinogen. Causes damage to the blood system: Chemical substances can easily contaminate human blood. Although blood has a certain self-purification ability, trace amounts of harmful substances entering it will be diluted, decomposed, adsorbed and excreted. However, if a large amount of toxic substances are poured in for a long time, it will inevitably cause damage to the blood system. Causes qualitative changes; entering the blood circulation, it will destroy the cell membrane of red blood cells and cause hemolysis.