Chitosan PCA is the pyrrolidonecarboxylic acid salt of chitosan, a chitosan-based polyaminosaccharide derivative. PCA is associated with pyrrolidonecarboxylic acid, also known as pyroglutamic acid or 5-oxoproline. Chitosan PCA is used in cosmetic formulations primarily for film forming, humectant and skin-conditioning functions.
Chitosan PCA is a salt formed from chitosan and pyrrolidonecarboxylic acid. Chitosan itself is a polymeric material derived from chitin, while PCA provides the pyrrolidonecarboxylic acid component of the salt.
The Korean Cosmetic Association defines Chitosan PCA as the pyrrolidone carboxylic acid salt of chitosan. The ingredient is separately recognized as Chitosan PCA in cosmetic ingredient nomenclature.
Chitosan PCA is a polymeric salt rather than a single small-molecule compound. Consequently, its exact molecular characteristics can vary according to the chitosan starting material, degree of deacetylation, molecular-weight distribution, PCA ratio and manufacturing process.
The U.S. FDA Substance Registration System lists Chitosan PCA under CAS 117522-93-7 and records synonyms including Chitosan L-Pyroglutamate, Chitosan Pyroglutamate and Chitosan Pyrrolidonecarboxylate.
One of the principal cosmetic functions of Chitosan PCA is film forming. COSMILE Europe describes film forming as producing a continuous film on skin, hair and/or nails. This property makes Chitosan PCA useful in cosmetic formulations where a polymeric surface film and conditioning effect are desired.
The film-forming behavior can be relevant to hair-care products, styling systems and skin-care formulations where a smooth, conditioned surface is required.
Chitosan PCA is recognized as a humectant. Humectants help hold and retain moisture in cosmetic products. This function makes Chitosan PCA relevant to moisturizing and conditioning formulations.
The PCA component is particularly relevant to the ingredient's moisture-related cosmetic positioning, while the chitosan portion contributes polymeric characteristics.
Chitosan PCA is also classified as a skin-conditioning ingredient. COSMILE Europe defines this function in relation to maintaining the skin in good condition.
It can therefore be incorporated into selected creams, lotions, serums, masks and other personal-care formulations.
Chitosan PCA can be used in hair-care formulations where film formation, moisture retention and conditioning are desirable.
Potential formulation categories include conditioners, hair masks, leave-on treatments, styling products and anti-frizz formulations. The actual performance depends on concentration, grade, molecular characteristics and the complete formulation.
Chitosan PCA can be incorporated into selected skin-care systems such as moisturizing creams, lotions, serums and masks.
Its combination of film-forming, humectant and skin-conditioning functionality can be useful when a formulation requires both moisture management and polymeric surface conditioning.
Chitosan PCA should be evaluated according to its specific commercial grade. Important formulation factors can include molecular weight, degree of deacetylation, concentration, pH, ionic environment, processing temperature and compatibility with other ingredients.
Because Chitosan PCA is a polymeric salt, its viscosity and solution behavior cannot be accurately predicted from the CAS number alone.
Commercial Chitosan PCA products can be water-soluble or readily dispersible depending on the grade and manufacturing process. One commercial specification describes Chitosan PCA as a white to light-yellow solid powder that is readily soluble in water and insoluble in high concentrations of ethanol and acetone. This should be treated as a supplier-specific characteristic, not a universal specification for every Chitosan PCA grade.
Chitosan is the parent polyaminosaccharide, whereas Chitosan PCA is its pyrrolidonecarboxylic acid salt.
Chitosan PCA therefore has a distinct ingredient identity and should not simply use the same specification sheet as standard Chitosan.
PCA refers to pyrrolidonecarboxylic acid or pyroglutamic acid. Chitosan PCA is different because PCA is associated with the chitosan polymer as a salt.
Therefore, Chitosan PCA provides polymeric film-forming characteristics in addition to the moisture-related functionality associated with the PCA component.
Both are chitosan salts, but they contain different acid components. Chitosan Lactate contains lactic acid, whereas Chitosan PCA contains pyrrolidonecarboxylic acid.
Their formulation properties and technical specifications should therefore be evaluated separately.
Chitosan Glycolate and Chitosan PCA are different chitosan salt forms. Chitosan Glycolate contains the glycolate component, while Chitosan PCA contains pyrrolidonecarboxylic acid.
They should not be treated as interchangeable raw materials without formulation testing.
The film-forming property of Chitosan PCA makes it relevant to selected hair-styling formulations. A polymeric film can contribute to the feel, manageability and surface characteristics of treated hair.
Performance depends on the grade, concentration, formulation composition and processing conditions.
As a recognized humectant, Chitosan PCA can be considered for moisturizing formulations where moisture retention is part of the formulation objective. Its polymeric chitosan component can additionally contribute film-forming and conditioning characteristics.
Chitosan PCA is not a single defined low-molecular-weight molecule. Therefore, the following parameters may vary between commercial grades:
These parameters should be obtained from the actual manufacturer's TDS, specification sheet and COA.
Chitosan PCA can be evaluated in:
Chitosan PCA is the pyrrolidonecarboxylic acid salt of chitosan.
The CAS number is 117522-93-7. This CAS number is also recorded in the FDA Substance Registration System.
The INCI name is Chitosan PCA.
The recognized cosmetic functions are film forming, humectant and skin conditioning.
Yes. Chitosan PCA is recognized as a humectant that helps hold and retain moisture in cosmetic products.
Yes. It is recognized as a film-forming cosmetic ingredient.
Yes. Skin conditioning is one of its recognized cosmetic functions.
PCA refers to pyrrolidonecarboxylic acid, also known as pyroglutamic acid or 5-oxoproline.
No. Chitosan PCA is the pyrrolidonecarboxylic acid salt of chitosan, while Chitosan is the parent polymer.
Water solubility is grade-dependent. Some commercial Chitosan PCA grades are reported as readily soluble in water.
A single fixed molecular formula should not be assigned to commercial Chitosan PCA because it is a polymeric salt whose molecular characteristics depend on the chitosan starting material and salt composition.
There is no single universal molecular-weight value applicable to every Chitosan PCA grade. The molecular-weight distribution should be obtained from the relevant technical specification.
The degree of deacetylation is grade-dependent and should be taken from the manufacturer's specification or COA.
It can be used in selected skin-care, hair-care, moisturizing, conditioning, film-forming and styling formulations.
Yes. Its film-forming, humectant and conditioning properties make it relevant to selected hair-care formulations.
Yes. It is recognized as a skin-conditioning and humectant ingredient and can be evaluated in suitable skin-care systems.
| Parameter | Specification |
|---|---|
| Appearance | White to off-white powder |