Soy Protein, Hydrolyzed

What is hydrolyzed soy protein?

Hydrolyzed soy protein is the hydrolysate of soy protein produced by an acid, enzyme, or other method of hydrolysis. It primarily functions as a hair conditioning agent and skin conditioning agent in cosmetics.

How is hydrolyzed soy protein produced?

Hydrolyzed soy protein can be produced using an acid and an enzyme. The protein dispersion is brought to pH 2.0 with HCl and incubated at 37°C for 30 minutes. Then, an enzyme such as pepsin is added at a 0.3% enzyme to substrate ratio and the reaction is incubated for 10 to 900 minutes. The enzyme is inactivated by adjusting the pH to 7.0 with NaOH.

What are the uses of hydrolyzed soy protein in cosmetic products?

Hydrolyzed soy protein is used as an antistatic and hair conditioning agent in hair care products. It is also used as a skin conditioning agent in cosmetics and can be present in detergents, bath soaps, and exfoliating face washes.

What are the reported functions of soybean protein-derived ingredients in cosmetics?

Soybean protein-derived ingredients can act as film formers, hair conditioning agents, and skin conditioning agents in cosmetic formulations.

Is hydrolyzed soy protein safe for use in cosmetics?

According to the Cosmetic Ingredient Review (CIR) Expert Panel, soy proteins and peptides, including hydrolyzed soy protein, are safe for use in cosmetics and are not restricted in any way under the rules governing cosmetic products in the European Union.

Are there any other soy ingredients used in cosmetics?

Yes, there are other soy ingredients used in cosmetics, such as soybean peptide, hydrolyzed soy milk protein, and soy amino acids. These ingredients can have various functions in cosmetic products.

How much hydrolyzed soy protein is typically used in detergents and bath soaps?

Up to 1.5% of hydrolyzed soy protein can be present in detergents and bath soaps.

What are some benefits of using soy ingredients in cosmetics?

Research has shown that soy ingredients can stimulate collagen production, offer anti-inflammatory benefits, and provide UV protection in cosmetic products.

How is hydrolyzed soy protein different from other soy protein derivatives?

Hydrolyzed soy protein is a mixture of proteins, peptides, and amino acids that have been broken down into smaller chains by reaction with water. Other soy protein derivatives, such as soybean protein and soybean peptide, may have different compositions and structures.

Are there any environmental considerations when using soy ingredients in cosmetics?

Soy ingredients, such as hydrolyzed soy protein, are considered more environmentally friendly than plastic microbeads and can be used as alternatives in exfoliating face washes.