Essential Oil of Japanese Cedar (Cryptomeria japonica) Wood Increases Salivary Dehydroepiandrosterone Sulfate Levels after Monotonous Work.
Matsubara E, Tsunetsugu Y, Ohira T, Sugiyama M.
Int J Environ Res Public Health. 2017 Jan 21;14(1). pii: E97. doi: 10.3390/ijerph14010097

Cedarwood Oil as Complementary Treatment in Refractory Acne.
Hassoun LA, Ornelas JN, Sivamani RK.
J Altern Complement Med. 2016 Mar;22(3):252-3. doi: 10.1089/acm.2015.0208.

Comparative efficacy of cedarwood oil and xylene in hematoxylin and eosin staining procedures: An experimental study.
Indu S, Ramesh V, Indu PC, Prashad KV, Premalatha B, Ramadoss K.
J Nat Sci Biol Med. 2014 Jul;5(2):284-7. doi: 10.4103/0976-9668.136167.

Bioactivity of cedarwood oil and cedrol against arthropod pests.
Eller FJ, Vander Meer RK, Behle RW, Flor-Weiler LB, Palmquist DE.
Environ Entomol. 2014 Jun;43(3):762-6. doi: 10.1603/EN13270.

New woody and ambery notes from cedarwood and turpentine oil.
Panten J, Bertram HJ, Surburg H.
Chem Biodivers. 2004 Dec;1(12):1936-48

The sedative effects and mechanism of action of cedrol inhalation with behavioral pharmacological evaluation.
Kagawa D, Jokura H, Ochiai R, Tokimitsu I, Tsubone H.
Planta Med. 2003 Jul;69(7):637-41

Safety

Dose-response assessment of the dermal toxicity of Virginia cedarwood oil in F344/N rats and B6C3F1/N mice.
Catlin NR, Herbert R, Janardhan K, Hejtmancik MR, Fomby LM, Vallant M, Kissling GE, DeVito MJ.
Food Chem Toxicol. 2016 Dec;98(Pt B):159-168. doi: 10.1016/j.fct.2016.10.016.

The cedarwood oil is made from the distillation of the leaves of the cedar tree (Juniperus virginiana, Juniper mexicana) that belongs to the Pinaceae family. It is also extracted from Cryptomeria japonica, a conifer.

The components of this oil, which is commonly used in cosmetics as stringent for the skin, are cedrene, thujopsene and cedrol and have antimicrobial and antifungal properties (1).

Positive activity of Cedrol on the airways is believed to be related to cardiovascular function (2).

It is present in the inhalant ointment Vicks VapoRub for the treatment of colds.

Cedarwood oil studies

References______________________________

(1) Suppressive Effects of Extract of Cedar Wood on Heat-induced Expression of Cellular Heat Shock Protein].  Miyakoshi J, Matsubara E, Narita E, Koyama S, Shimizu Y, Kawai S.  Yakugaku Zasshi. 2018 Jan 1;138(1):97-106. doi: 10.1248/yakushi.17-00165.

(2) Autonomic responses during inhalation of natural fragrance of Cedrol in humans.  Dayawansa S, Umeno K, Takakura H, Hori E, Tabuchi E, Nagashima Y, Oosu H, Yada Y, Suzuki T, Ono T, Nishijo H.  Auton Neurosci. 2003 Oct 31;108(1-2):79-86.