Did you know that Ho Wood, Ravintsara and Camphor oils all come from the same plant?
Cinnamomum camphora is a large evergreen tree native to Asia and occurs in many chemotypes, three of which are commercially processed. Paradoxically, White Camphor oil, commonly known as “Camphor Oil” contains very little camphor. Strictly speaking it is not a true essential oil, it is a fraction. More on fractionation here: https://en.wikipedia.org/wiki/Fractional_distillation
Ho Wood oil is rectified to reduce the safrole content. Safrole is a carcinogen.