Sericin & Fibroin


Sericin is the outer layer of silk protein that helps bind the strands of silk together into a cocoon. It helps to coagulate and heal wounds, reducing the risk of infection. Sericin is the silk protein most commonly found in hair products. This is because silk proteins help to prevent and repair hair damage.


Fibroin is the protein on the inside of silk. Because it’s on the inside, fibroin is responsible for silk’s structure. Most skincare products use the fibroin protein because of its high percentage of glycine and alanine. This combo has amazing effects on the skin.

Fibroin has a high percentage of the amino acids glycine and alanine. The combination of these two acids is very easily absorbed into the skin and has the following benefits when combined.

  • Promotes cell repair and regeneration.
  • Reduces transdermal water loss to maintain skin’s hydration levels.
  • Boosts collagen levels, leading to firmer skin and anti-aging benefits.
  • Very gentle exfoliation.
  • Protective against sun damage.