Sodium PCA

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Overview

What Is It?

In cosmetics and personal care products, PCA (pyrrolidonecarboxylic acid) is used mostly in the formulation of hair conditioners and moisturizers. The sodium salt of PCA, Sodium PCA, can be found in these products, as well as in shampoos, hair sprays, permanent waves, skin fresheners and other hair and skin care products.

Why is it used in cosmetics and personal care products?

PCA and Sodium PCA increase the water content of the top layers of the skin by drawing moisture from the surrounding air. They also enhance the appearance and feel of hair, by increasing hair body, suppleness, or sheen, or by improving the texture of hair that has been damaged physically or by chemical treatment.

Scientific Facts:

PCA, also known pyroglutamic acid or pidolic acid, occurs naturally in mammalian tissues, including the skin. It can be prepared from glutamic acid, an amino acid found in vegetables, fruits, grasses and molasses.

Safety

Safety Information:

The safety of PCA and Sodium PCA has been assessed by the Cosmetic Ingredient Review (CIR) Expert Panel. The CIR Expert Panel evaluated the scientific data and concluded that PCA and Sodium PCA are safe for use in cosmetics and personal care products. These ingredients should not be used in cosmetic products containing nitrosating agents.

More safety Information:

CIR Safety Review: The CIR Expert Panel noted that a manufacturer of these ingredients recommended a concentration range of 0.2-4% in cosmetics and personal care products. PCA applied to the skin was absorbed to a limited extent. Absorption was in addition to PCA already present in the skin. In short-term and subchronic studies, findings were unremarkable.

Sodium PCA was nonirritating to the eye and skin at concentrations up to 50%. No evidence of phototoxicity, sensitization or comedogenicity was found. These ingredients were not genotoxic. In a range of clinical tests, PCA and Sodium PCA were found to be nonirritating and nonsensitizing (with and without UV exposure). Based on the low skin penetration of dermally applied PCA and in recognition that PCA is a normal component of the skin, it was considered that reproductive and developmental toxicity data were not critical to completion of the safety assessment.

These ingredients, however, should not be used in cosmetics and personal care products containing nitrosating agents.

More information about nitrosamines.

PCA and Sodium PCA may be used in cosmetics and personal care products marketed in Europe according to the general provisions of the Cosmetics Regulation of the European Union.

Link to the EU Cosmetic Regulation:
http://europa.eu/legislation_summaries/consumers/product_labelling_and_p...

More scientific Information:

PCA is a cyclic organic compound, and Sodium PCA is the sodium salt of PCA. In cosmetics and personal care products, they both function as hair conditioning agents and skin conditioning agents - humectant. These hygroscopic materials also retard moisture loss from products during use.

Resources

Resources:

Find out more about the regulation of Food Additives by the Food and Drug Administration

Food Ingredients and Packaging: http://www.fda.gov/Food/IngredientsPackagingLabeling/default.htm

Food Contact Substances: http://www.fda.gov/Food/IngredientsPackagingLabeling/PackagingFCS/defaul...

Substances Generally Recognized As Safe (GRAS): http://www.fda.gov/Food/IngredientsPackagingLabeling/GRAS/default.htm

Search the Code of Federal Regulations http://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfcfr/cfrsearch.cfm

EU Cosmetics Inventory http://ec.europa.eu/consumers/cosmetics/cosing/

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