Cysteine

Cysteine is an essential sulfur-containing amino acid, which is found in proteins involved in many biological processes, such as redox reactions, enzymatic activity and cellular signaling. One of its most important roles is that of a precursor to the primary antioxidant glutathione, which is involved in maintaining proper cellular homeostasis and oxidative stress defense. Cysteine is also involved in the binding of other molecules, such as metals and toxins, as well as the production of disulfide bridges that strengthen proteins. These properties make cysteine an important component of skin care products, dietary supplements and even drugs. In addition, it has been shown to have anti-inflammatory, anti-aging and anti-oxidant properties, which makes it a highly sought after molecule in many industries.