Keratin is produced by specialized cells called keratinocytes. These cells are found in the outermost layer of your skin, known as the epidermis. Keratinocytes produce keratin, a tough, fibrous protein that forms the structural basis of your hair, skin, and nails.
Keratin production is a complex process that involves several stages. First, keratinocytes synthesize keratin proteins. These proteins then assemble into long, fibrous strands called filaments. The filaments are then bundled together to form larger structures called intermediate filaments. These intermediate filaments give hair, skin, and nails their strength and flexibility.
Here are some additional details about keratin production:
- Keratin is not a single substance. It is composed of a complex mixture of proteins, including various types of keratins, keratins-associated proteins (KFAPs), and enzymes.
- Keratin expression is regulated by mRNA levels, which is cell type dependent.
- Certain foods can boost keratin production naturally. These include eggs, onions, salmon, sweet potatoes, sunflower seeds, mangoes, garlic, and kale.
