With lemon, sailors of yore prevented scurvy. It helps to strengthen integuments, especially brittle nails. It improves digestion, is refreshing, and protects our immunity! Native to the Himalayas, the lemon tree was widely cultivated in China and the Mediterranean countries. Its essence*, formed in the pericarp of the fruit, contains among other substances coumarins, but mainly limonene (55 to 80% of the active ingredients). This monoterpene gives lemon essence amazing properties for the immune, circulatory, and digestive systems.