Cinnamomum Camphora Linalooliferum Wood Oil

Essential oils are highly concentrated, and a specific subset has documented reproductive-toxicity signals: pennyroyal (its pulegone is hepatotoxic and a historical cause of poisoning-induced miscarriage), wintergreen (essentially pure methyl salicylate — the same class of concern as oral aspirin), the thujone-rich oils sage, wormwood, mugwort, thuja and tansy (thujone is a convulsant and reproductive toxin), camphor (crosses the placenta to fetal organs), and hyssop/basil (neurotoxic / estragole carcinogenic-potential concerns). Most of this evidence is from animal studies or high-dose or ingested exposure, not low-concentration cosmetic use, so treat it as a reason for caution, not alarm. Rosemary and clary sage are sometimes cautioned against too, but the leading essential-oil-safety literature considers that unsupported at cosmetic-use levels — a lower priority within this caution than the oils above.

Evidence: Limited evidence.

• Dosoky NS, Setzer WN. Maternal Reproductive Toxicity of Some Essential Oils and Their Constituents. Int J Mol Sci 2021. PMC

Cinnamomum Camphora Linalooliferum Wood Oil appears in <1% of the 7,321 decoded products in our catalog (1 product). This describes our recorded ingredient lists, not the whole skincare market.