Waxes and solid structure

Polyamide-3

A conceptual pale translucent structured-oil arch stands beside an anonymous short perfume-stick section.
About this illustration
Polyamide-3Conceptual structured-oil form
The Polyamide-3 material architectureA polymer can help an oily base stand as a clear gel. The arch is a conceptual picture of supporting shape, while the finished stick remains a formulated blend.

A fine structural polymer can let an oil-rich cosmetic stand in a stick, then leave a delicate film during application.

Name on the ingredient listPolyamide-3

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A quick answer

Polyamide-3 is a film-forming polymer. Commercial cosmetic grades can structure oils into clear gels, sticks and balms. It is one of the supporting ingredients in a published jelly perfume balm, where structure and a smooth spreading base work together.

The unseen framework of a translucent stick

A clear balm looks deceptively simple. Light passes through it, the surface looks smooth, and a swipe leaves material behind. Yet holding a liquid-feeling base in a compact shape requires some internal organization.

Polyamide-3 is one possible contributor to that organization. It belongs to the polymer world: molecules built from repeating connected units. In cosmetics, particular polyamide grades can help oils behave as a gel or a solid and can leave a film on the applied surface. The word polymer becomes less abstract when it is connected to those two everyday moments: holding the product, then wearing its trace.

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The number is an identity, not a score

Polyamide describes a family of polymers containing amide links. The number in Polyamide-3 distinguishes its cosmetic ingredient identity. It does not tell you a percentage, a quality ranking or how many hours a product will last.

That distinction is useful because Polyamide-8 may appear nearby. These are separate names, even though both can be associated with structuring oils. Their exact commercial grades and the surrounding base influence the resulting material.

Think of the label as naming members of a toolkit. Knowing the family helps you place them; knowing the full identity keeps you from assuming every tool performs in exactly the same way.

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Two complete-name cards lie in separate material archives.
Polyamide-3Polyamide-8
Keep the number with the namePolyamide-3 and Polyamide-8 have separate identity records. Their numbers help you keep the names apart; they are not a ranking of strength or a promise of substitution.Visual references: OleoCraft HP-31, OleoCraft LP-20, Cheirosa40 Jelly Perfume Balm, Polyamide-3

One label identity can have several versions

Croda's OleoCraft range includes more than one grade with the INCI name Polyamide-3. The grades are chosen for different formulation settings, including the kinds of oils with which they work.

This is a useful glimpse into how cosmetics are made. A printed ingredient name is not always a complete description of the raw material a formulator evaluated. Polymer size and material properties can vary among grades that share the same INCI identity.

The practical result is a wider set of choices: a maker can work toward a clear stick, a gel or a film with a particular feel. The ingredient list names the material family member; the product's texture shows what the formulator has built with it.

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A graphite pastille study sits apart from a translucent sculpted gel form.
HP-31 · Polyamide-3Illustrative oil-gel study
The raw material and the designed formThe selected HP-31 grade arrives as pastilles. The monochrome drawing records that form; the separate sculpted gel is an illustration of a design possibility, rather than the supplied material or a test result.Visual references: OleoCraft HP-31, OleoCraft LP-20, Cheirosa40 Jelly Perfume Balm, Polyamide-3

Giving an oily base a new behaviour

The manufacturer describes its cosmetic oil-structuring polymers forming clear, thermoreversible gels. Thermoreversible means that warming and cooling can change the structured state under the appropriate conditions.

This is different from imagining an oil becoming permanently converted into a hard substance. The oil and polymer form an organized material together. Its properties depend on their combination and processing.

The memorable idea is that solidity can come from structure as well as from a large quantity of naturally hard wax. A compact balm may therefore have an oily spreading character even when it stands neatly in its case.

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A broad folded paper support sits beneath a separate smooth translucent plane.
An everyday way to picture supportA folded paper support offers an everyday analogy for giving an oil-rich format some structure. It does not show polymer chains, a microscopic network or the measured structure of a perfume balm.Visual references: OleoCraft HP-31, OleoCraft LP-20, Cheirosa40 Jelly Perfume Balm, Polyamide-3

What remains after the swipe

Polyamide-3 is also classified as a film former. A film is a continuous deposited layer, which may be much thinner than anything we would ordinarily call a film in daily life. In cosmetics it connects the act of application with the material left on skin, hair or nails.

In a colour product, such a layer can help keep the applied material coherent. In a balm, it becomes part of the trace you feel after spreading. This is a different job from supplying fragrance or pigment, even when it supports the way those ingredients are delivered.

Commercial grades are offered for wear- and water-resistance benefits, but those claims need evaluation in the finished product rather than being read automatically from one ingredient name.

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Two polyamides in one perfume balm

Sol de Janeiro's published Cheirosa 40 Jelly Perfume Balm list contains Polyamide-8 and Polyamide-3, alongside Isostearyl Isostearate and Caprylic/Capric Triglyceride. The list makes a fluid-base-plus-structure picture tangible.

The emollients supply a spreading medium, while polyamide ingredients provide a route toward its jelly-like, portable form. Using two related structural identities is a reminder that formulation often involves balancing several materials rather than finding one universal solidifier.

The brand's application advice is to expose only a small amount of the stick before swiping. That practical instruction belongs to the finished object, including its packaging and structure. Ingredient understanding and ordinary use directions can complement each other.

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A generic fragrance stick rests beside a generous blank page for a source-order excerpt.
Polyamide-8Polyamide-3Parfum (Fragrance)
Spot the two names on a real listThis short excerpt follows Sol de Janeiro’s published Cheirosa 40 list: Polyamide-8, Polyamide-3, then Parfum (Fragrance). Both polymer names are present; the list does not reveal their supplied grades or proportions.Visual references: OleoCraft HP-31, OleoCraft LP-20, Cheirosa40 Jelly Perfume Balm, Polyamide-3

Another way to create a network

Some clear solids use small-molecule glutamide gelators instead of, or alongside, polymer systems. Those ingredients self-assemble into fine networks despite not being polymers. Polyamide-3 offers a different structural route.

The comparison is worth remembering because appearance alone cannot reveal the construction. Two transparent sticks may arrive at that effect with different chemistry, just as two buildings may have different frameworks behind a similar exterior.

Once you know Polyamide-3, a label begins to reveal those frameworks. It gives you a reason to appreciate the supporting design behind a cosmetic that moves smoothly, stays coherent and fits into a pocket.

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A wax-based compact illustration and an oil-gel stick illustration sit on separate coloured paper stages.
Wax-based formatOil-gel format
Different ways to build a portable formatWaxes and oil-gelling polymers can help create portable cosmetics through different material strategies. These generic format studies compare approaches, without predicting the feel or staying power of a particular product.Visual references: OleoCraft HP-31, OleoCraft LP-20, Cheirosa40 Jelly Perfume Balm, Polyamide-3

Questions you might have

Does the 3 mean it is weaker than Polyamide-8?

No. The number identifies a different INCI material; it is not a strength rating. Commercial grade, oil choice and formulation determine how a particular polymer contributes to a gel or stick.

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What does film forming mean here?

It means the ingredient can contribute a continuous deposited layer on a surface such as skin. That material layer is distinct from the fragrance or colour it may help a cosmetic carry during application.

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Can a solid containing Polyamide-3 still contain liquid emollients?

Yes. The published jelly perfume balm combines polyamides with spreading emollients. Structuring an oily base is one way to make a portable solid while preserving a fluid-feeling application from that base.

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One useful thought

Polyamide-3 helps reveal the framework: a clear solid can be a carefully structured oily base, with a fine film as part of its after-feel.

Sources

References and further reading
  1. Polyamide-3COSMILE Europe
  2. OleoCraft HP-31Croda Beauty
  3. Cheirosa 40 Jelly Perfume BalmSol de Janeiro
  4. Oil Gelling Agent Mix AJK-OD2046Ajinomoto