What JFS detects
The current ingredient-quality heuristic can recognize selected color names such as Red 3, Red 40, Yellow 5, Yellow 6, Blue 1, Blue 2, and Green 3 when they appear in the source ingredient text.
JFS scoring explainer
Synthetic colors in JFS scoring.
How selected synthetic color names appear in the JFS ingredient-quality heuristic.
What that does not mean
Detection is a processing-complexity signal inside JFS. It is not a medical, toxicity, allergy, or safety determination.
See it in context
A JFS product rating uses multiple factors together. No single nutrition or ingredient signal determines whether a product is appropriate for you.
See the complete scoring approach ↗Educational use only: this page explains JFS methodology and is not medical, dietary, or allergen-safety advice.