L-Cystine
Type: Amino Acid
Cysteine/Cystine is a sulphur-containing amino acid that aids in the formation of skin and important in detoxification.
Our body can produce only small amounts of cysteine yet it is essential to produce collagen and especially glutathione - a crucial antioxidant that help neutralises free radicals.
Common food sources incude egg yolks, red peppers, garlic, onions, yogurt and dark leafy vegetables like broccoli.