Rosmarinus officinalis CT1 camphor, Rosmarinus officinalis CT2 cineole, and Rosmarinus officinalis CT3 verbenone are some of the chemotypes that are believed to be quite effective in treating conditions associated with skin and hair. Massaging this oil on the scalp and hair can rid you of problems such as hair fall, dandruff, and thinning hair. Here's some more information on the benefits of this wondrous oil.