Clove Oil is a colorless or pale yellow oil derived from the clove tree cultivated in the Moluccas or Spice Islands (now Maluka of Indonesia), Madagascar, Zanzibar, and the Philippines. It is obtained from the leaf of the plant by steam distillation. Use to prevent skin forming on oil paint. Add to egg tempera, emulsions and glues to prevent mold and bacteria. Clove oil is composed primarily of eugenol.