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Is Ultramarines (ci 77007) safe on skin (left on)?

Cosmetics1 use researched1 sourced claims

Where it turns up: blue pigment, vibrant colorant, common. Detox My Life researched ultramarines (ci 77007) under one use, because the same substance means something different in each use. Every claim below carries its evidence tier, how sure the research is that it applies here, and the sources it cites. The level is computed by the app's own deterministic engine, so the page says exactly what the app would.

Level by use and lens

UseMainstreamCautious (default)BasedConcerns · favour · fringe
On skin, left onSwapSwapSwap1 · 0

Mainstream shows consensus claims only; Cautious adds emerging research; Based adds fringe claims, labelled as such. The last column counts, under Cautious, the sourced concerns, the findings in its favour and the fringe claims Based would add.

Safer swaps: the app's swap catalog has no entry tied to this ingredient yet. When you scan a product that contains it, the app suggests cleaner alternative types for that product; the swap categories list what the catalog covers today.

On skin, left on Swap

Under the default Cautious lens ultramarines (ci 77007) on skin (left on) rates Swap: the app would put this near the top of your swap plan. Mainstream (consensus only) rates it Swap; Based (adds the fringe) rates it Swap. Researched 2026-09-03.

Sourced concerns (1)

ConsensusRestrictedconfidence 100%

Ultramarines (CI 77007) are approved as color additives for externally applied cosmetics, including those used around the eyes, in the US and are permitted in all cosmetic categories in the EU; however, the US FDA restricts their use in lip products due to concerns about sulfur release in the acidic environment of the mouth.

Why here
This claim directly addresses the dermal_leave_on exposure route, including application to the eye area, and highlights specific regulatory restrictions for lip products within this route.
What would have to be true
Use as a colorant in externally applied cosmetics, consistent with good manufacturing practices.
The other side
N/A.
Sources the engine cites:

Not researched here

The engine has no dossier for ultramarines (ci 77007) when cooked with heat, in cold food, as a finishing ingredient, in heated food packaging or other uses. The app researches an ingredient for the use it infers from your product, so a scan fills these in; this page only shows what has already been researched and source-verified.

This is research, not medical advice. Detox My Life shows sourced claims sorted by evidence tier. It does not diagnose, treat, or tell you to start or stop anything. Talk to a qualified professional about your health.

Scan your own. The app reads any product label with your camera, works out how you are about to use it, and researches every ingredient for that use with live sources. Every scan adds to a Detox Score for your home, where 50 is a typical home in your region, and a plan of next swaps.

See also: all ingredients · paste a label to check it · how to read an ingredient flag