There are two key ingredients: Amino Sugar Care Complex: It is a complex of sugars and amino acids that penetrate the hair structure and mitigate the action of persulphates, preserving the keratin structure. Cysteine & Glycine: Cysteine & Glycine work inside the keratin bonds and hair structure. They strengthen the hair and help the lightening process for a result focused on the health of the hair by providing more oxygen during the lightening process.