Fir Needle Oil Sämst Doft – Syntetisk & naturlig Inga kända fördelar Fir Needle Oil beskrivning Volatile, fragrant oil that can cause skin sensitivity. According to the Natural Medicines Comprehensive Database, “The essential oil also acts as a rubefacient (counterirritant) and improves circulation when applied externally.” A counterirritant is defined as any ingredient that causes sensitisation or a mild swelling of the skin to alleviate uncomfortable symptoms deeper within skin.