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A Comparative Analysis of Hydrolysed Silk Amino Acid Profiles

A Comparative Analysis of Hydrolysed Silk Amino Acid Profiles

Hydrolysed silk proteins have gained significant attention in the skincare and cosmetic industry for their remarkable skin-nourishing properties. This research piece aims to compare the amino acid profiles of three hydrolysed silk products, Seresilk Hydrolysed Silk, Trulux Hydrolysed Silk & Crosilk G - market leaders - highlighting the unique qualities of Seresilk that make its Australian silk stand out.


Silk is a natural protein fibre produced by silkworms in their cocoons and has been a cherished material for close to 5,000 years due to its luxurious feel and remarkable properties. In recent years, hydrolysed silk proteins have gained prominence as a key ingredient in skincare products, owing to their potential benefits for skin health and rejuvenation. Three prominent hydrolysed silk products in the market, Seresilk Hydrolysed Silk, Trulux Hydrolysed Silk and Crosilk G, differ in their amino acid profiles, which can significantly impact their efficacy in skincare applications.


Analysing the amino acid profiles, Seresilk Hydrolysed Silk stands out as a product with significantly higher levels of essential amino acids, such as glycine, serine, alanine, and proline. These amino acids are known for their contributions to skin hydration, elasticity, and overall skin health. The presence of amino acids like threonine, tyrosine, and phenylalanine further enhances Seresilk's potential benefits for skin. However, the quality and efficacy of silk in skincare can vary based on its source. Australian silk, thanks to the unique climate and environment in which it is produced, offers distinct advantages over silk from other regions.


Unique Qualities of Seresilk Hydrolysed Silk:

  1. Rich in Glycine and Serine: Glycine and serine are essential for collagen production, which plays a crucial role in maintaining skin firmness and elasticity. Seresilk's high content of these amino acids makes it an excellent choice for promoting skin rejuvenation.

  2. Alanine and Proline: Alanine and proline are known for their moisture-retaining properties, ensuring that the skin remains adequately hydrated, which is particularly important in dry or arid climates.

  3. Enhanced Threonine and Tyrosine: Threonine supports skin barrier function, while tyrosine is a precursor for melanin production, aiding in the protection of the skin from UV damage.

  4. Balanced Amino Acid Profile: Seresilk offers a well-balanced amino acid profile, which is crucial for skin repair and renewal.


Benefits for Skincare: The unique amino acid profile of Seresilk Hydrolysed Silk makes it an ideal choice for various skincare applications:

  1. Moisturisation: Seresilk provides superior hydration, making it suitable for moisturizing creams, serums, and masks.

  2. Anti-Aging: Its amino acids support collagen production, reducing the appearance of fine lines and wrinkles.

  3. Protection: Seresilk's amino acids contribute to the skin's natural defence mechanisms against environmental stressors.

  4. Repair: The presence of alanine, proline, and threonine aids in repairing damaged skin.


The exceptional diversity and abundance of amino acids in Australian silk may contribute to its superiority as a skincare ingredient. Let's explore possible reasons for the presence of these amino acids:

  1. Environmental Factors: Australia's distinctive climate and environmental conditions may influence the metabolism of silkworms, enhancing their ability to synthesise a wide range of amino acids.

  2. Silkworm Diet: The diet of silkworms plays a vital role in determining the amino acid composition of their silk. The unique flora and fauna available in Australia may offer silkworms a rich source of diverse nutrients.

  3. Silk Production Techniques: Rearing and feeding practices employed in Australian silk production may be optimised to enhance the amino acid content, ensuring its suitability for skincare applications.

  4. Genetic Factors: Australian silkworm strains may have developed genetic traits that favour the synthesis of specific amino acids, contributing to the richness of Australian silk's amino acid profile.


Additionally, Australia's climate, characterised by its harsh sun, dryness, and occasional extreme temperatures, places unique demands on skincare products. Much like bees and local honey is famous for, Seresilk's amino acid profile aligns with the needs of individuals living in such conditions, offering an extra layer of protection and care for their skin.


Seresilk Hydrolysed Silk boasts a superior amino acid profile compared to Trulux Hydrolysed Silk & Crosilk G, making it a highly desirable choice for skincare formulations. Its richness in glycine, serine, and other essential amino acids provides numerous benefits, particularly in challenging climates like that of Australia. Seresilk Hydrolysed Silk represents a promising option for individuals seeking effective and nourishing skincare solutions. Further research and development in this area may unlock even more potential benefits for users worldwide.


The comparable amino acid profiles of Seresilk Hydrolysed Silk, Trulux Hydrolysed Silk and Crosilk G are presented below:

Seresilk Hydrolysed Silk:

  • Alanine: 24.98%
  • Arginine: 1.90%
  • Aspartic Acid: 3.93%
  • Glutamic Acid: 2.58%
  • Glycine: 30.53%
  • Histidine: 0.00%
  • Hydroxyproline: 0.00%
  • Isoleucine: 0.71%
  • Leucine: 0.67%
  • Lysine: 0.91%
  • Methionine: 0.27%
  • Phenylalanine: 1.35%
  • Proline: 0.79%
  • Serine: 19.43%
  • Threonine: 1.67%
  • Taurine: 0.00%
  • Tyrosine: 7.93%
  • Valine: 2.34%

Amino acid recovery (total) 2.5%


Trulux Hydrolysed Silk Protein:

  • Alanine 28.47%
  • Arginine 0.84%
  • Aspartic Acid 2.28%
  • Cystine 0.23%
  • Glutamic Acid 2.03%
  • Glycine 35.50%
  • Histidine 0.33%
  • Isoleucine 0.81%
  • Leucine 0.60%
  • Lysine 0.50%
  • Methionine 0.13%
  • Phenylalanine 1.23%
  • Proline 0.36%
  • Serine 12.03%
  • Threonine 1.08%
  • Taurine 0.36%
  • Tyrosine 10.31%
  • Valine 2.92%

Amino acid recovery (total) 0.11%


Crosilk G:

  • Alanine: 3.25%
  • Arginine: 0.70%
  • Aspartic Acid: 3.50%
  • Cystine: 0.20%
  • Glutamic Acid: 2.60%
  • Glycine: 38.40%
  • Histidine: 1.00%
  • Isoleucine: 0.70%
  • Leucine: 1.00%
  • Lysine: 0.30%
  • Methionine: 0.00%
  • Phenylalanine: 0.20%
  • Proline: 1.00%
  • Serine: 14.60%
  • Threonine: 1.40%
  • Tyrosine: 4.00%
  • Valine: 2.60%

Amino acid recovery (total): UNKNOWN


We will continue to zero-in on the topics explored briefly in this story. Interested in finding out more about silk in skincare? Join the Seresilk mailing list and message for any topics you'd like to see covered in future articles.

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