Analysis of Protein Content in Cosmetics

Expert protein content testing in cosmetics raw materials and ingredients. Our biochemistry expertise can help you develop or produce safe and innovative beauty products.

Proteins and peptide ingredients in cosmetics present opportunities to innovate and improve the performance of products. Sourced from plants, algae and even fungi, these can be converted to a soluble form, through a hydrolysis procedure, for easier product formulation and used in all types of cosmetics (emulsions, lotions, gels, powders).

A wide range of vegetable proteins are used in cosmetics, such as wheat gluten rice, oats, sunflower, almonds and peanuts and soy globulins. Wheat gluten (often called wheat protein) is a unique cereal protein offering high elasticity when hydrated, ideal for moisturizing applications for the skin. Soy proteins are useful due to their gelling and emulsifying effects. Lipid plant extracts may also contain residual levels of proteins depending on their manufacturing process.

These proteins can potentially be a source of type I allergy of food origin (in particular wheat proteins). Exposure to them can potentially lead to adverse reactions (asthma, itching or anaphylactic shock) and are classified as such in the category of “new allergens.” Due to their allergenic potential, the quantity and type of proteins present in raw materials must be determined by accurate and robust analytical testing.

Our protein testing for cosmetics
Our biochemistry experts deploy several analytical approaches for robust, sensitive protein quantification in cosmetic raw materials. Methods include the CBQCA (3-(4-carboxybenzoyl)quinoline-2- carboxaldehyde) method which uses a fluorescence microplate reader and the bicinchoninic acid (BCA) assay, which is a colourimetric method. Using these methods, we can accurately determine total protein in cosmetics raw materials (oils, waxes, powders, aqueous and cellular solutions).

As the trend for natural ingredients continues, and more novel peptides and proteins are explored for use in cosmetics formulations, a scientific approach to understanding these complex ingredients such as total protein content can support your product development, raw materials selection, or production quality control.

Our Total Quality Assurance solutions
Our cosmetics testing experts offer a toolbox of Total Quality Assurance solutions for cosmetics testing, delivered from our centre of excellence for cosmetics testing, LaCoMed, located near Chalon-sur-Saône in France.

Supporting your value chain from raw materials sourcing, across production processes and through to finished products, we offer responsive analytical resources to ensure consistent raw material quality and technical consulting to resolve production issues. Our dedicated analytical testing resources are integrated with our combined strengths of clinical studies, regulatory guidance and labelling review.

Need help or have a question? +33 (0) 385 99 12 80

Need help or have a question?

+33 (0) 385 99 12 80
+33 (0) 385 99 12 80