Ingredient
CI 42090 (FD&C Blue 1)
What is CI 42090 (FD&C Blue 1)?
CI 42090, commonly known as FD&C Blue 1, is a synthetic dye derived from petroleum. It is used in a variety of products, including food, cosmetics, and pharmaceuticals, to give a blue coloration.
FD&C Blue 1 is primarily used for its bright hue and ability to blend well with other colors to create a wide range of shades. The health evidence around this dye is mixed; while it is approved for use by many regulatory bodies, it has been subject to controversy for potential allergic reactions in sensitive individuals.
When you see it on a label, it's typically present in small amounts, but some consumers prefer to avoid synthetic colorants due to personal preferences or concerns about their safety.
Commonly found in: baked goods, confections, beverages, cosmetics, pharmaceuticals
What to watch
- There have been reports of allergic reactions in sensitive individuals.
- Some animal studies have raised concerns about potential health effects, but these findings are not consistently replicated in humans.
FD&C Blue 1 is approved by the FDA for use in food, drugs, and cosmetics, with specific concentration limits.
Some studies suggest potential health risks, but the evidence is inconsistent and not conclusive.
This dye is synthetic and not derived from animal sources; it is generally considered vegan.
Sources: Overview of Food Colors
Scout's take
Coal-tar triphenylmethane dye added for bottle color. Documented dermal absorption in topical use; aesthetic-only addition with no consumer benefit.
More from Scout's analyses
Coal-tar synthetic dye added purely for the pale-blue bottle aesthetic; a documented sensitizer class in topical products.
from the analysis of Louis Vuitton Imagination Eau de ParfumCoal-tar triphenylmethane dye added for color. Documented dermal absorption in topical use; some neurotoxicity signals in animal studies. Aesthetic-only.
from the analysis of Dior Sauvage Eau de ToiletteFound in 7 products
Scan any product to see every ingredient explained — and healthier swaps.
Download on theApp Store GET IT ONGoogle Play