Hydrolyzed yeast protein is a bioactive ingredient derived from yeast that has undergone hydrolysis, breaking down its proteins into smaller peptides and amino acids. This ingredient is highly valued in the cosmetic and personal care industry for its moisturizing, skin conditioning, and revitalizing properties, making it a beneficial component in various skincare, hair care, and anti-aging products.

Chemical Composition and Structure
Hydrolyzed Yeast Protein contains a variety of bioactive compounds produced during the hydrolysis process, including peptides, amino acids, vitamins, and minerals. These compounds contribute to its beneficial effects on the skin and hair, such as providing hydration, enhancing skin barrier function, and promoting cellular regeneration. The specific composition includes:

Peptides: Small chains of amino acids that help with skin elasticity and repair.
Amino Acids: Essential building blocks for proteins that maintain skin hydration and improve texture.
Vitamins: Various B vitamins that nourish and revitalize the skin.
Minerals: Essential elements that support overall skin health.
Physical Properties
Hydrolyzed Yeast Protein typically appears as a clear to slightly opalescent liquid or fine powder. It is water-soluble, making it easy to incorporate into various water-based cosmetic formulations.

Cosmetic and Personal Care Applications
Moisturizing: The high content of amino acids and peptides provides strong moisturizing benefits, helping to maintain skin hydration and improve elasticity.

Skin Conditioning: This ingredient helps to condition the skin, enhancing its texture and overall appearance. It is suitable for all skin types, especially dry and sensitive skin.

Anti-Aging: The presence of peptides and amino acids helps to reduce the appearance of fine lines and wrinkles by promoting collagen synthesis and improving skin elasticity.

Revitalizing: Hydrolyzed Yeast Protein revitalizes the skin by promoting cellular regeneration and improving overall skin tone and texture.

Hair Care: In hair care products, Hydrolyzed Yeast Protein helps to nourish the scalp, strengthen hair fibers, and enhance the shine and smoothness of the hair.

Soothing: The protein's bioactive compounds have soothing properties that help to calm irritated skin and reduce redness.

Environmental and Safety Considerations

Hydrolyzed Yeast Protein is generally considered safe for use in cosmetic and personal care products. It is non-irritating and suitable for all skin types. As a naturally derived ingredient, it poses minimal risk to the environment when disposed of properly. Utilizing hydrolyzed yeast protein also supports sustainable practices by promoting the use of bioactive compounds produced through natural processes.

Cosmetics - INCI Functions


Antistatic agent. Static electricity build-up has a direct influence on products and causes electrostatic adsorption. The antistatic ingredient reduces static build-up and surface resistivity on the surface of the skin and hair.

Hair conditioning agent. A significant number of ingredients with specific and targeted purposes may co-exist in hair shampoo formulations: cleansers, conditioners, thickeners, matting agents, sequestering agents, fragrances, preservatives, special additives. However, the indispensable ingredients are the cleansers and conditioners as they are necessary and sufficient for hair cleansing and manageability. The others act as commercial and non-essential auxiliaries such as: appearance, fragrance, colouring, etc. Hair conditioning agents have the task of increasing shine, manageability and volume, and reducing static electricity, especially after treatments such as colouring, ironing, waving, drying and brushing. They are, in practice, dispersants that may contain cationic surfactants, thickeners, emollients, polymers. The typology of hair conditioning agents includes: intensive conditioners, instant conditioners, thickening conditioners, drying conditioners. They can perform their task generally accompanied by other different ingredients.

Skin conditioning agent. It is the mainstay of topical skin treatment as it has the function of restoring, increasing or improving skin tolerance to external factors, including melanocyte tolerance. The most important function of the conditioning agent is to prevent skin dehydration, but the subject is rather complex and involves emollients and humectants that can be added in the formulation.
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