Emollients and texture esters

C13–15 alkane

A broad shallow pale translucent material arc sweeps across charcoal stone, with a tiny separate solid hair-product fragment for scale.
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C13–15 Alkane
The pale sweeping arcA chain-length range can become a practical fluid tool. C13–15 Alkane helps explain the moving part of a solid formula, while other materials give that formula its body.

A range of numbers can tell a useful material story. C13–15 Alkane identifies a family of saturated hydrocarbon molecules within a chosen chain-length range. In a cosmetic, that technical shorthand can become something very ordinary: a fluid medium that helps a product glide.

Name on the ingredient listC13-15 Alkane

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A quick answer

C13–15 Alkane is a mixture of saturated hydrocarbons with carbon chains in the thirteen-to-fifteen range. Its listed functions include solvent and a supporting role in fragrance preparations. Cosmetic suppliers also offer grades for smooth movement and a restrained afterfeel. It is different from squalane and from other alkane ranges. In a solid formula, it belongs to the fluid component of the mixture, while other ingredients can provide the structure.

The numbers describe chains, not a recipe

C13–15 records the range of carbon-chain lengths in the alkane mixture. It does not tell you the percentage in the product or a recommended age for use. Alkane identifies saturated hydrocarbons: molecules made from carbon and hydrogen with no carbon-carbon double bonds in their alkane framework.

The range is a compact way to describe a useful mixture rather than one isolated molecule. That is common in cosmetic materials. A formulator may want the physical character of a selected range, with the supplied material designed around it. The label preserves that identity without turning into a catalogue of every individual component.

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Three unsegmented paper ribbons of increasing length, with native labels C13, C14 and C15.
C13C14C15Schematic chain-length range
Reading the number rangeThe range points to carbon-chain lengths in the mixture. These paper ribbons are a reading aid for the name.

A supporting role can shape the whole application

Solvent is one of the ingredient's listed functions. It describes providing a medium in which compatible substances can dissolve. In a solid perfume, for example, the fluid medium and the materials that give the product body have different but connected jobs.

This makes the carrier worth noticing. It contributes to the setting in which the other ingredients are arranged, and its physical properties can affect the experience of application. The scent may be the reason you chose the product, but the way it transfers from a tin or stick is part of enjoying it. An inconspicuous fluid can participate in that small moment of ease.

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Fictional solid perfume with a wrist-use context, and fictional serum bar with a hair-use context, both carrying the same editable ingredient name.
Illustrative solid perfumeC13–15 AlkaneIllustrative serum barC13–15 Alkane
The product gives the contextThe same ingredient name can appear in different solid formats. Read it alongside the product’s purpose and directions to understand the context.

Glide and a powdery impression

A cosmetic supplier describes its C13–15 Alkane grade through a fresh gliding sensation and a powdery afterfeel. These descriptions refer to the sensory impression of the material in a formulation context. They show why a liquid ingredient can be considered when a maker wants a restrained, less oily-feeling finish.

Powdery does not mean the liquid literally becomes powder. It is a comparison used to describe touch. That distinction is useful across beauty copy, where familiar words often stand in for a more complex sensory sequence. Movement first, then afterfeel: keeping the two moments separate makes the description easier to imagine.

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A non-polar liquid among its partners

The supplier's grade is described as non-polar. Polarity helps explain which materials are comfortable together in a formula. Here, the liquid belongs to the oil-loving side of the formulation conversation rather than behaving like water.

This is why a clear liquid cannot be understood just by looking at it. It may be a watery ingredient, a silicone fluid, an ester or an alkane mixture, each with a different set of relationships. The maker chooses those relationships before the product reaches its container. What looks like one smooth surface is the result of resolving how several materials can share a useful format.

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A chain-length name leaves origin as another question

C13–15 Alkane describes the material category and chain-length range. It is not, by itself, a botanical species name or a statement that every supply comes through the same manufacturing route. Some commercial materials discussed as hemisqualane also sit within this ingredient conversation, but the grade and sourcing explanation need to remain specific.

One clear sourcing statement from the brand is more helpful than guessing from the C-number. Once that question is answered, attention can return to the ingredient's useful physical job. A route and an identity are connected pieces of information, but neither replaces the other.

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Two separate historical route examples: petroleum with distillation, and sugarcane with fermentation, each ending at a closed ingredient holder.
Petroleum feedstockDistillationEMOSMART L15 · 2016 examplePlant sugarsFermentationNeossance · 2017 example
The route behind the materialHistorical grade examples show why the INCI and its source are separate pieces of information. A supplier’s route statement completes the story behind the name.

C13–15 and C15–19 are different choices

Other alkane ranges appear in cosmetic portfolios. Changing the stated range changes the declared ingredient identity, so C13–15 Alkane and C15–19 Alkane should not be treated as alternate spellings. The numbers retain part of the material's specificity even when the names look repetitive.

This is a useful reading habit for technical ingredients generally. Numbers may identify chain lengths, a particular polymer or another meaningful distinction. They are worth keeping when comparing products or following an explanation. You do not need to memorise every range; noticing that a range is part of the name already prevents several easy mix-ups.

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Three equally weighted clear liquid examples under separate full-name label windows.
C13–15 AlkaneTridecaneUndecane
Neighbouring alkanesSimilar-looking liquids can carry different ingredient names. Keep each complete name when comparing the materials.

Why a fluid belongs in a solid

A solid is an arranged mixture, not a promise that every ingredient began as a hard material. Waxes, gelling materials or other structural partners can hold fluids and allow the product to remain convenient to handle. During use, a small amount of that blend transfers and reveals the chosen balance of movement and body.

C13–15 Alkane makes that design visible in the ingredient story. A range of saturated hydrocarbons becomes a fluid tool for the maker, then part of the experience for the user. The technical name is worth understanding because it connects an otherwise anonymous carrier to a real pleasure: a solid that releases and spreads with the feel its format needs.

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Uniform ivory solid with a separate fluid gesture and a matte structural field outside the bar.
Illustrated solid formatFluid roleStructural partners
Inside a serum barA solid format can hold fluid ingredients within an arranged mixture. The separate studies illustrate fluid feel and structural support.

Questions you might have

Do the numbers mean there are thirteen to fifteen ingredients?

No. They refer to the carbon-chain-length range of the alkane molecules in the mixture. That is part of the material's identity, not a count of the finished product's ingredients. Understanding this convention makes several technical names less mysterious: a number can be a useful description of structure rather than an unexplained code.

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Does “fragrance functional” mean it supplies a noticeable scent?

It describes a supporting role in fragrance preparations, rather than necessarily being the scent note you recognise. A carrier or solvent can help fragrance materials share a medium. That is different from being the flower, citrus or woody character of the finished product. The distinction lets you separate the scent composition from the physical setting that helps it become a usable solid.

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Is C13–15 Alkane the same as squalane?

No. Squalane has a separate defined identity, while C13–15 Alkane describes a particular alkane mixture range. They can appear in related conversations about emollient fluids, and hemisqualane is another commercial term you may encounter. Similar names or sensory aims do not make the declared ingredients interchangeable. Keeping the exact INCI helps the comparison stay clear.

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One useful thought

C13–15 Alkane turns a chain-length range into a practical texture tool. The numbers explain the identity; the solvent and sensory roles explain why it may be useful. Inside a solid, its fluid contribution can be part of the balance that makes a tidy format glide comfortably during use.

Sources

References and further reading
  1. C13-15 ALKANE – IngredientCOSMILE Europe
  2. EMOSMART L15Seppic supplier listing on Covalo
  3. C13-15 Alkane ingredient dictionary entryKorea Cosmetic Association