01 · nanoKplex

The Molecular Structure of Hair

1.1 Keratin and the Structural Organisation of Hair Fibres

The hair fibre consists predominantly of keratin proteins organised into a hierarchical structure. This organisation, together with the chemical bonds and intermolecular interactions between protein chains, contributes to the hair's tensile strength, flexibility and mechanical resilience.

Three principal structural components determine the properties of the hair fibre.

Damage to any of these components may affect the mechanical strength, chemical resistance and cosmetic properties of the hair.

1.2 Bonds and Interactions Stabilising Keratin Structure

The structural stability of keratin depends on a combination of covalent bonds and non-covalent molecular interactions.

Collectively, these interactions provide the scientific foundation for the development of hair bonding and structural reinforcement technologies.

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Disulphide Bonds and Bond-Building Technology

2.1 The Structural Role of Sulphur Bonds

Disulphide bonds are formed between cysteine residues within keratin proteins.

Their general chemical representation is:

Keratin-S-S-Keratin

These covalent cross-links contribute to the spatial stability of keratin and the mechanical properties of the hair fibre.

During certain chemically reducing processes, disulphide bonds may be cleaved, generating free thiol groups:

Keratin-SH

Under suitable conditions, oxidation may facilitate the reformation of disulphide bonds.

However, bleaching and other oxidative processes may also cause irreversible modifications to certain keratin components. Consequently, the reformation of individual bonds does not necessarily constitute complete restoration of the original hair structure.

2.2 Mechanisms of Hair Bond Building

Bond-building technologies may operate through several mechanisms, including the formation of new covalent bonds, reinforcement of intermolecular protein interactions and the development of polymeric networks.

A study published by Wu and colleagues in 2024 investigated the formation of new chemical cross-links in reduced hair through a thiol-Michael reaction.

The research demonstrated the potential to establish alternative covalent linkages through the reaction of available thiol groups [3].

These findings highlight an important distinction: strengthening the chemical connectivity of the hair fibre does not necessarily require the precise reformation of its original disulphide bonds.

Three principal technological objectives can therefore be distinguished:

• Bond Protection: Preservation of existing structural bonds.
• Bond Reconstruction: Formation of new chemical linkages.
• Structural Reinforcement: Improvement of the structural and mechanical properties of the hair fibre.

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M460P Biomimetic Technology

3.1 The Technological Foundation of nanoKplex

M460P Biomimetic Technology represents the technological foundation of the nanoKplex range.

According to the technical documentation issued by Nanokeratin System Laboratories, the technology was developed to support the structural integrity of hair during and following chemical treatments [6].

The biomimetic approach draws upon the molecular organisation of keratin and its associated bonding systems as a foundation for developing advanced hair reinforcement technologies.

3.2 The Three Fundamental Principles of M460P

Together, these three principles establish a treatment framework combining structural protection during chemical processing with reinforcement and conditioning afterwards.

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Fresh Milk and Milk Proteins in nanoKplex Technology

4.1 The Biochemical Basis

One of the distinguishing characteristics of nanoKplex is the incorporation of fresh milk into defined professional treatment protocols.

Bovine milk is a complex biochemical system containing proteins, lipids, minerals and water.

Casein accounts for approximately 80% of the total protein content of bovine milk.

A scientific safety assessment published in the International Journal of Toxicology in 2022 described the use of milk proteins and their derivatives as cosmetic ingredients in hair- and skin-conditioning applications [1].

4.2 Casein and Hair Fibre Reinforcement

A study published in Polymers in 2025 investigated a hair-coating system based on casein, tannic acid and riboflavin phosphate.

Blue-light-induced cross-linking was employed to generate a protein-based network on the surface of hair fibres.

The researchers reported an approximately 21% improvement in tensile strength compared with untreated hair [2].

The findings demonstrate the potential of casein as a component of an engineered protein-based system for improving the mechanical strength of hair.

However, the investigated system employed isolated casein and a specific cross-linking mechanism. Its findings therefore do not constitute direct evidence of the effectiveness of fresh milk within nanoKplex treatments.

4.3 Combining M460P with Milk Proteins

The nanoKplex concept combines a technological system intended to reinforce hair structure with a natural source of proteins.

Milk proteins may participate in hydrogen bonding, electrostatic interactions and adsorption onto the hair surface.

Such mechanisms may influence the formation of a conditioning layer and the frictional and combing properties of the hair fibre.

The combination of M460P and milk proteins provides a scientific rationale for investigating complementary effects, which can be assessed through chemical and mechanical measurements.

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The nanoKplex Professional Treatment System

The nanoKplex range comprises two professional treatment products and two complementary maintenance products.

01 REBOND | Bond Builder

Protecting Hair Bonds During Chemical Processes

The first product in the system is intended for incorporation into chemical treatments in accordance with the company's professional protocols.

Its stated purpose is to support the protection of hair bonds and help maintain the structural stability of keratin during chemical processing.

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02 REINFORCE | Bond Enhancer

Reinforcing Hair Fibre Structure

The second product is designed to reinforce and condition the hair structure following chemical processing or as part of a standalone professional treatment.

In certain protocols, it is combined with fresh milk as part of the protein-based treatment system.

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03 REFRESH | Balancing Shampoo

Gentle Cleansing and Hair Balance

A complementary shampoo formulated to cleanse the hair and scalp as part of the post-treatment maintenance regimen.

It is designed to support gentle cleansing and maintain a balanced feel to the hair.

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04 RETAIN | Sustainer

Maintaining Hair Flexibility and Manageability

A complementary conditioning product intended to help maintain cosmetic treatment results between professional services.

It supports the hair's perceived flexibility, smoothness and ease of combing.

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Incorporation of Fresh Milk into Professional Protocols

The nanoKplex professional guide describes the use of fresh milk containing at least 3% fat in several treatment protocols [7].

The timing of milk incorporation is significant in determining its intended role.

When milk is introduced after the removal of a chemical treatment, its potential contribution relates to the subsequent conditioning stage rather than direct protection during chemical exposure.

Professional applications should follow the manufacturer's complete protocol, including the requirements associated with each chemical treatment.

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Scientific Principles Underlying Hair Reinforcement Technologies

Hair fibre reinforcement technologies employ several distinct chemical and physicochemical mechanisms.

A comparative study published in 2016 investigated the effects of keratin, wheat and collagen protein derivatives on damaged hair.

The findings demonstrated that changes in tensile strength depended on the protein derivative, the condition of the hair and the experimental parameters [4].

These results emphasise the importance of matching the composition of a treatment system to the characteristics of the hair fibre and the nature of the damage.

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Scientific Methods for Evaluating nanoKplex

The scientific assessment of a hair bond-building system requires a combination of mechanical, chemical and structural analytical methods.

8.1 Mechanical Testing

• Tensile Strength: Measurement of the tensile load required to fracture a hair fibre.
• Elastic Modulus: Assessment of fibre stiffness and its mechanical response to applied stress.
• Elongation at Break: Measurement of the extent to which a hair fibre elongates before fracture.
• Combing Force: Assessment of resistance to combing under wet and dry conditions.
• Hair Fibre Friction: Measurement of frictional interactions between hair fibres.

8.2 Chemical and Structural Analysis

• Raman Spectroscopy: Investigation of molecular characteristics, including spectral features associated with sulphur-containing bonds.
• Fourier-Transform Infrared Spectroscopy (FTIR): Identification of functional groups and changes in protein organisation.
• Scanning Electron Microscopy (SEM): Examination of hair-surface morphology and cuticle condition.
• Thiol Quantification: Measurement of available thiol groups to investigate chemical changes associated with sulphur-containing bonds.

8.3 Assessment of the Contribution of Fresh Milk

To evaluate the additional contribution of fresh milk, hair treated with nanoKplex alone should be compared with hair treated using the same system supplemented with milk.

A control group incorporating an equivalent quantity of water would help distinguish the effects of milk constituents from those caused by dilution.

Assessment of synergistic effects would also require experimental separation of the contributions of the individual components.

Formulation stability, chemical compatibility and microbiological safety should be evaluated.

8.4 Long-Term Durability

Repeated measurements following controlled washing cycles can be used to assess the persistence of improvements in hair properties.

These tests help distinguish temporary coating effects from more durable changes in the mechanical behaviour of the hair fibre.

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Scientific Discussion

Advanced hair treatment technologies increasingly focus on the protein structure of the hair fibre and the molecular interactions responsible for its strength and stability.

The nanoKplex range combines a biomimetic technology intended to protect and reinforce hair bonds with professional protocols incorporating fresh milk.

This approach addresses two complementary aspects of hair treatment: structural protection during chemical exposure and protein-based conditioning at appropriate subsequent stages.

From a scientific perspective, three levels of effect should be distinguished.

• Cosmetic Improvement: Improvements in smoothness, gloss and combability.
• Mechanical Reinforcement: Measurable improvements in tensile strength, flexibility or resistance to breakage.
• Molecular Bond Modification: Measurable chemical changes to existing bonds or the formation of new molecular linkages.

These distinctions enable a more precise assessment of treatment performance and the potential mechanisms underlying the observed effects.

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Scientific Conclusions

The nanoKplex | Biomimetic Hair Bonding Technology range, developed by Nanokeratin System Laboratories, is based on a professional approach combining hair bond protection, reinforcement of the keratin structure and complementary protein-based conditioning.

M460P Biomimetic Technology represents the stated technological foundation of the range, whilst the incorporation of fresh milk into defined professional protocols provides a natural source of proteins and other biochemical constituents.

The scientific literature establishes the importance of disulphide bonds and intermolecular interactions in keratin stability and demonstrates the potential of certain protein-based systems to improve the mechanical properties of hair fibres.

These findings provide a scientific basis for understanding the technological approach. However, direct experimental investigation is required to establish the specific mechanisms and performance of the nanoKplex system itself.

nanoKplex represents a professional hair treatment concept founded on an understanding of keratin's molecular architecture, the protection of hair bonds and the integration of proteins within an advanced treatment system.

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Scientific References

1. [1] Burnett, C. L., et al. (2022).
   Safety Assessment of Bovine Milk Proteins and Protein Derivatives as Used in Cosmetics.
   International Journal of Toxicology.
   DOI: 10.1177/10915818221098137
2. [2] Kyung, S., Koh, W. G., & Lee, H. J. (2025).
   A Photo-Crosslinked Casein-Tannic Acid System for Enhanced Hair Protection: A Green Chemistry Approach.
   Polymers, 17(12), 1585.
   DOI: 10.3390/polym17121585
3. [3] Wu, Y., et al. (2024).
   Reconnection of Cysteine in Reduced Hair with Alkylene Dimaleates via Thiol-Michael Click Chemistry.
   International Journal of Cosmetic Science, 46(3), 457–467.
   DOI: 10.1111/ics.12944
4. [4] Daniels, G., Nicholson, S., Grant-Ross, P., & Tamburic, S. (2016).
   An Ex Vivo Comparison of the Tensile Strengthening Properties of Protein Derivatives on Damaged Hair.
   IFSCC Magazine.
5. [5] Di Foggia et al. (2021).
   Structural Investigation on Damaged Hair Keratin Treated with α,β-Unsaturated Michael Acceptors Used as Repairing Agents.
   International Journal of Biological Macromolecules.
6. [6] Nanokeratin System Laboratories.
   nanoKplex: M460P Biomimetic Technology.
   Manufacturer's technical and professional documentation.
7. [7] Nanokeratin System Laboratories.
   nanoKplex Professional Step-by-Step Guide.
   Manufacturer's guide to professional treatment protocols and the incorporation of fresh milk.