The Birch essential oil from Esential’Arôms forms part of the E.O.B.B.D. range, Essential Oils Botanically and Biochemically Defined, in which the botanical species, producing organ and biochemical specificity of each essential oil are identified. In this case, it is obtained from the wood of Betula lenta and its biochemical specificity is methyl salicylate. Essential oils are highly concentrated substances and must be used with caution, always respecting the recommended dilution and avoiding direct application to the skin.