What is Silk?

Silk is a natural protein fiber, primarily composed of Fibroin, produced by the larvae of the mulberry silkworm (Bombyx mori) to form its cocoon. Unlike plant fibers (Cotton, Linen) which are cellulose-based, silk is animal-based, sharing a similar chemical structure to human skin.

1. The Amino Acid Structure

Silk is composed of 18 different amino acids. Its protein structure allows it to be biocompatible.

  • Skin Affinity: Because its composition closely mirrors human skin/hair, silk does not draw moisture out of the skin (unlike cotton). It helps maintain the skin's natural hydration barrier.
  • Hypoallergenic: The sericin protein naturally repels dust mites, mold, and fungus, making it the ideal textile for asthma sufferers or those with allergies.

2. Thermal Regulation

Silk has a unique "paradoxical" thermal property.

  • Insulation: The microscopic structure of the silk fiber is triangular and prism-like. This allows it to trap a layer of warm air close to the body in winter.
  • Breathability: In summer, its high absorptivity allows it to wick moisture away efficiently, keeping the skin cool. It acts as a natural temperature regulator.

3. Tensile Strength

Despite its delicate appearance, a single filament of silk is stronger than a filament of steel of the same diameter. It has high elasticity and can stretch up to 20% beyond its original length without breaking. However, it loses up to 20% of its strength when wet, which is why care must be taken during washing.

4. The Look (Refraction)

The shimmering appearance of silk is not a chemical finish; it is structural. The triangular prism-like structure of the silk fiber refracts incoming light at different angles, producing distinct colors and a natural luster.

5. Woven in Como

HACOY silk is woven in Como, and our silk essentials are cut and sewn near Ferrara, Italy, by a family owned atelier.

Conclusion

Silk is more than a luxury aesthetic; it is a biological tool. Its protein-based structure offers unique dermatological benefits, thermal regulation, and incredible strength, making it one of the most sophisticated materials in nature.