Product name: silk fibroin INCI Name: SILK POWDER Mesh: 2-40m; 350nm Total nitrogen: 14.5 PH: 5.0-7.0 Appearance: White or grayish yellow powder Supplier: ZHENYIBIO Silk fibroin (silk protein hydrolysate) is a natural moisturizing factor (NMF) with the amino acid content of silk protein,which can beneficially rebuild the skin's moisturizing system.Silk fibroin serum is known for its excellent moisturizing and anti-aging properties,as well as soothing and antioxidant effects.Silk fibroin hydrogel has a significant antioxidant effect and forms a protective peptide coating to protect the skin from harmful effects.It retains moisture and provides a soft touch.The silk fibroin film was developed to accelerate wound healing and can be peeled off without damaging the newly formed skin.