Minerals, pigments and optical ingredients

CI 15850 · a red with several names

A matte warm-red compacted powder slab with fine crumbled edges rests on ivory ceramic beside a separate neutral cosmetic edge.
About this illustration
CI 15850D&C Red 6 Sodium Salt
The red colour slabThis illustrated red powder study follows a documented Red 6 sodium-salt example. Retaining the full CI declaration helps keep related red preparations—and a different carmine story—distinct.

Some ingredient names sound wonderfully familiar until a closer look reveals a different material. CI 15850 can appear under names such as Litholrubin or Carmine 6B, yet it is a synthetic red colour family. Its story is a useful little rescue from the confusion created by shared colour words.

Name on the ingredient listCI 15850

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A quick answer

CI 15850 identifies a synthetic red azo colour associated with names including Litholrubin and Pigment Red 57. A current manufacturer lists D&C Red 6 sodium salt under this exact code, while related preparations carry additional suffixes. It can be used to colour solid cosmetics, including conditioner bars. Its red identity is separate from the oils, butters and conditioning ingredients that determine the product’s principal care role.

A colour entry among the creamy ingredients

A solid conditioner can have a substantial ingredient list: fatty alcohols to support its body, conditioning materials, oils, butters and small amounts of colour. One current herbal conditioner declares CI 15850 alongside CI 19140. The red and yellow are part of the visible palette inside a product designed primarily for hair care.

That pairing is worth noticing because it separates the product’s visual identity from its care ingredients. A botanical scent or a butter-rich composition does not require the colour to come from the same plant materials. Several kinds of craft can meet in one small bar.

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A uniform rose-red stick and sliced disk stand between separate red powder, pale wax-like shavings and an emollient dab.
Colourant exampleIllustrative solidConceptual wax roleConceptual emollient role
The colour in the baseColour is one contribution inside a solid built for another purpose. The external studies separate colourant, structure and emollience while the cut face stays a single finished material.

Azo describes the colour family

CI 15850 belongs to the azo-dye family. The word points to a feature of the colour chemistry; it is not a description of texture, fragrance or the amount present. The numerical identity connects several names that may otherwise look unrelated.

Litholrubin, Rubin Pigment and Pigment Red 57 are among the aliases found in ingredient references. A maker or supplier may use a more specific commercial colour name as well. Following the numerical anchor makes those naming systems easier to connect, particularly when comparing information written for different markets.

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Separate supports display scarlet Red 6 powder, earthy red iron oxide, and wine-purple roselle powder beside dried calyces.
CI 15850 · Red 6 Sodium SaltRed iron-oxide example · LC381Roselle calyx-derived powder
Red is not one ingredientRed-looking materials can have very different identities. A synthetic colour, prepared iron oxide and roselle calyx powder each keep their own source and preparation story.

A familiar word can belong to another red

Carmine 6B is an alias associated with this synthetic colour family. Cochineal carmine, by contrast, is associated with CI 75470 and a different source story. The shared word carmine is therefore a poor shortcut for deciding which material a label describes.

This is one of the most useful discoveries hidden in colour lists. A name can evoke a familiar pigment without identifying its origin. When the source matters to your choices, follow the complete ingredient identity and the brand’s verified product information. The CI number helps keep two different reds from being merged in conversation.

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The red has related preparations

A current pigment manufacturer lists D&C Red 6 sodium salt under CI 15850. Its broader portfolio also lists related calcium and barium preparations with suffixes. Those variations are a reminder that the prepared colour material carries more information than the word red.

This is less a chemistry lesson than a habit of keeping useful detail. If a label or source gives a colon and another digit, preserve it. The added characters can distinguish a related preparation. They should not be silently borrowed from another product just because its red looks similar.

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An unprinted folio pairs a closed opaque material holder with a separate warm-red powder example.
CI 15850Bare code · form unspecifiedCI 15850 · D&C Red 6 Sodium SaltDocumented powder example
Form qualifiers matterRetain the preparation name when the source gives one. D&C Red 6 Sodium Salt describes the selected powder example more fully than a bare colour code.

A powder does not make the whole product powdery

The commercial sodium-salt grade is supplied as a powder. Once incorporated, it becomes one component of a finished solid with its own surrounding materials. The raw form and the final object are different stages of the story.

This is familiar from colour in many crafts: a small quantity of a prepared colour can join a much larger body of another material. In a conditioner, the tactile framework comes from its formulation. Seeing powder in a supplier description need not lead you to expect a dusty or dry-feeling finished bar.

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Broad light reveals a warm scarlet powder ridge with finely raked face and dusty edges.
CI 15850D&C Red 6 Sodium Salt
The red material at close rangeThis sodium-salt example arrives as a powder. Its raw texture is one stage of the story; a finished solid takes its feel from the complete formulation.

Colour can help distinguish a daily favourite

When several solids share a similar shape, shade can help you recognise which one belongs to which step of a routine. That is a modest but useful design job. The colour ingredient contributes to recognition and pleasure, alongside the practical choices that make the bar usable.

The full label remains the best place to identify the red. A product photograph shows the combined shade; the CI code identifies a component. Keeping those levels separate lets you enjoy the finished object while understanding a little more of how its appearance was made.

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A reader chooses between two generic conditioner variants, unfolds one carton, and records its colour code.
Choose the actual variantNormal/DryOilySelected Normal/Dry list excerpt: Ricinus communis oil, CI 19140, CI 15850Keep CI 15850
Choose the actual variantOpen the list for the particular variant you are considering. Its own declaration gives firmer colour evidence than a neighbouring product photograph.

Questions you might have

Does Carmine 6B mean cochineal?

The names should not be merged. Carmine 6B is an alias listed for synthetic CI 15850, whereas cochineal carmine is associated with CI 75470. The complete numerical identity is useful precisely because familiar colour words can overlap. For an animal-origin preference, use the exact label and verified information for the finished product.

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Why is a red colour listed in a conditioner?

The conditioner’s main job comes from its conditioning formula, while a colourant can contribute to appearance. A current herbal bar lists CI 15850 with a yellow colour. That illustrates how a product can combine care materials and a separate visual palette without asking one ingredient to perform every role.

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Is CI 15850 always the same lake?

No single lake preparation should be assumed from the bare code. The manufacturer example for CI 15850 is Red 6 sodium salt, while related calcium and barium products in its portfolio carry suffixes. Preserve whatever complete identity the product declares, including an extra colour name or numerical suffix when present.

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One useful thought

CI 15850 is memorable for the naming puzzle it solves. A synthetic red can share an evocative word with a different pigment, and a small suffix can identify a different preparation. Follow the complete name and the palette becomes clearer: a deliberate visual contribution inside a solid made for another everyday purpose.

Sources

References and further reading
  1. CI 15850 – IngredientCOSMILE Europe
  2. D&C Red 6 Na SaltNeelikon
  3. Luxury Herbal Conditioner Bar: IngredientsThe Solid Bar Company
  4. CI 75470 – IngredientCOSMILE Europe
  5. Cosmetic pigments portfolioNeelikon