Researchers have discovered that a popular food dye used in Cheetos " [1]alters the optical qualities of skin, allowing light to pass through (Source paywalled; [2]alternative source )," according to the Wall Street Journal. Larger doses of the dye used on humans could make searching veins for blood draw easier. From a report:

> Tartrazine, the yellowing agent for the "dangerously cheesy" snack, was tested on the stomachs and heads of mice -- with surprising results. Researchers were even able to see muscle pulsations and blood vessels in their brains, the Wall Street Journal reported.

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> How does this ultimate magic trick work? It has to do with how cells are comprised of membranes that hold fats in a watery style, the outlet stated. The fats and water manage light differently. In this case, when the dye is applied, it causes light to pass through when it hits their cells. Thus, ta-da! the transparent opacity of invisible mice skin.

The findings have been [3]published in the journal Science .



[1] https://www.wsj.com/science/biology/cheetos-food-coloring-turns-mice-transparent-ba3e9315

[2] https://nypost.com/2024/10/03/lifestyle/cheetos-food-coloring-turns-mice-skin-transparent-study/

[3] https://www.science.org/doi/10.1126/science.adr7935