Cinchona is a tree originally from south america its bark extract contains quinine well known for its fortifying properties researchers at klorane laboratories have selected an extract of red cinchona due to its particularly high content of quinine which has a stimulating action on the hair bulb and in turn strengthens the hair klorane cinchona extract is combined with a vitamin b complex b5 b6 b8 known for its capacity to reinforce hair structure and stimulate growth formulated in a ver