Glossary
Proteins derived from the cocoons of the Bombyx mori silkworm, broken down through hydrolysis into smaller amino acid chains that can be absorbed by skin and hair. Silk amino acids form a moisture-retaining, breathable film on the skin that smooths texture, increases hydration, and provides a natural matte finish.
Silk fibroin (the structural protein of silk thread) is hydrolyzed into smaller peptides and amino acids that penetrate the outer skin layers. These silk amino acids have an affinity for keratin (the protein that makes up the outer skin layer), binding to the skin surface and forming a micro-thin film that retains moisture while allowing the skin to breathe.
This film has unique optical properties: it diffuses light, creating a soft-focus effect that minimizes the appearance of fine lines and pores. This is why many cosmetic primers and finishing products contain silk proteins, and they create an immediately visible smoothing effect that remains until the product is washed off.
Silk amino acids can be incorporated into natural formulations at 1-5 percent concentration. They dissolve in water, making them easy to add to water-containing products. In anhydrous (water-free) products, silk powder (finely ground silk fibers) provides similar smoothing and mattifying benefits.
In beeswax-based formulations, finely ground silk powder can add a luxurious, silky texture and a natural matte finish that reduces shine without adding heaviness.
No. Silk amino acids are derived from silkworm cocoons. The standard production process kills the silkworm during cocoon harvesting. Peace silk (Ahimsa silk) allows the moth to emerge before the cocoon is processed, but this is not standard. Vegan alternatives include plant-derived amino acid blends.
Yes. The film formed by silk amino acids reduces transepidermal water loss, and the hydrolyzed proteins bind water molecules, providing both humectant and barrier benefits. The effect is measurable: studies show increased skin hydration levels within hours of application.
Silk proteins are generally well-tolerated, but individuals with known silk allergies should avoid them. For most people, silk amino acids are hypoallergenic and non-irritating. Patch test if you have a history of protein-based allergies.
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