The Use of Keratin Hydrolysate Obtained by Microbial Conversion of Chicken Feathers as Part of a Cosmetic Serum for Hair Care

    January 2026 in “ Health Food & Biotechnology ”
    Kirill E. Betekhtin, Ekaterina R. Volnova, L.A. ROZANTSEVA, Natalia G. Mashentseva
    Studysummary This study developed a sustainable biotechnological process using Bacillus licheniformis strains to produce keratin hydrolysate from chicken feathers, and found that cosmetic hair serum with this ingredient improved hair smoothness, elasticity, and shine in a small focus group.
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    Research cited in this study 6

    1. Enzymatic Crosslinking of Amino Acids Improves the Repair Effect of Keratin on Hair Fiber Polymers · 2023
    2. Penetration of Different Molecular Weight Hydrolysed Keratins into Hair Fibres and Their Effects on the Physical Properties of Textured Hair International Journal of Cosmetic Science · 2020
    3. Chemical And Physical Treatments Damage Caucasian And Afro-Ethnic Hair Fibre: Analytical And Image Assays JEADV. Journal of the European Academy of Dermatology and Venereology/Journal of the European Academy of Dermatology and Venereology · 2019
    4. Reactive Keratin Derivatives: A Promising Strategy for Covalent Binding to Hair Journal of colloid and interface science · 2018
    5. Protein Disulfide Isomerase-Mediated Grafting of Cysteine-Containing Peptides onto Over-Bleached Hair Biocatalysis and biotransformation · 2011
    6. Hard and Soft Principles Defining the Structure, Function, and Regulation of Keratin Intermediate Filaments Current Opinion in Cell Biology · 2002