1 - Silk pillowcases help keep moisture in your hair
For certain hair types that fall into the curly hair category, the oval shape of the follicles makes it significantly harder for natural oils or sebum to travel down the hair shaft, resulting in dryness.
For hair suffering from hair loss, this dryness can cause even more breakage.
Here are two ways silk pillowcases can help:
First, you could douse your hair with moisturizing and protein-bonding treatments to fight hair loss, but if you sleep on a cotton pillowcase, it will sap your hair of these treatments, leaving it dry, prone to tangling, and causing more hair loss but this wouldn't be the case with silk pillowcases.
Secondly, silk pillowcases—and silk in general—contain a natural protein called fibroin. Fibroin has a high capacity to retain moisture by forming a thin protective barrier on the surface of the scalp and hair, which helps lock in hydration and prevent dryness.
Additionally, fibroin is rich in amino acids that can bind and attract water molecules, further aiding in hydration.
This is one of the reasons protein treatments are used in the restoration of damaged hair.