Cysteine Complex works in synergy with hair’s existing proteins to restructure, soften, and release curls from hair. The healing capabilities of the Dendrobium Orchid absorb and eradicate free radicals. Cysteine is a compound already found in hair, and it makes up about 40% of hair’s natural protein composition. Amazon Series Keratin Cysteine Complex from the Amazon Series works to restore the proteins in hair that have been lost over time. Curl volume is reduced, leaving hair straighter and more manageable. The reduction of curl volume as a result of applying Cysteine Complex is up to 60% on ethnic, virgin, and coarse hair, and up to 70% on Caucasian hair.