Here's Exactly Why Cheetos Stain Your Fingers - Tasting Table
Briefly

Cheetos leave an orangey-red residue on fingers known as Cheetle. This stain is primarily due to ingredients like Yellow 6, riboflavin, and cheddar cheese powder. The staining process involves a chemical reaction between these additives and the oils on skin, which enhances the dust's adherence. Flamin' Hot Cheetos contain more artificial coloring than regular Cheetos, leading to more persistent stains. Takis also contain similar color additives but lack riboflavin, which may explain their lesser staining impact.
Cheetles, the bright orange cheese dust from Cheetos, stains skin effectively due to the presence of artificial colorings like Yellow 6 and riboflavin.
Flamin' Hot Cheetos contain more artificial color than regular Cheetos, contributing to more noticeable and persistent stains on fingers due to additional additives.
Both Cheetos and Takis contain similar artificial coloring agents, but the absence of riboflavin in Takis may result in less staining.
Cheetos' residue sticks to skin partly because of a chemical reaction between cheddar cheese powder, additives, and skin oils, enhancing the adherence of the dust.
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