Ningbo Waylead Biotechnology Co., Ltd. sell "L-Cystine"

Functions as an antioxidant that helps protect tissue against radiation and pollution damage, and plays a role in protein synthesis. It supports vitamin B6 utilization, aids healing of burns and wounds, and is required by certain malignant cell lines and micro-organisms in culture media for growth. It also stimulates the hematopoietic system, promoting formation of white and red blood cells, and serves as an active ingredient in dermatitis treatments.