The Cinchona is a tree from South America. traditionally used for its strengthening and revitalising properties. Researchers at KLORANE Laboratories selected an extract of red Cinchona: Cinchona calisaya Wedd. species because its bark isBiodegradable formula – Dermatologically tested naturally rich in Quinine, a molecule with powerful, scientifically shown and patented stimulating properties. Parabens free – sulfates free.