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Hazardous Oils

This list shows oils that should not normally be used in aromatherapy. Some are used by qualified aromatherapy practitioners who understand the risks and feel they can use them in specific circumstances, however, they are risky and do present hazards. Other hazardous oils will certainly exist so it is safe to assume that an oil is risky unless an expert has shown it to be safe or to be safe within specified parameters of use. Do not take risks with oils.

Ajowan - Trachyspermum copticum

Almond, Bitter - Prunus Dulcis Var. Amara

Arnica - Arnica Montana

Birch (Sweet Birch) - Betula Lenta

Boldo Leaf - Peumus Boldus

Broom (Spanish Broom) - Spartium Junceum

Calamus - Acorus Calamus Var. Angustatus

Camphor - Cinnamomum Camphora

Deertongue - Carphephorus Odoratissimus

Garlic - Allium Sativum

Horseradish - Armoracia Rusticana

Jaborandi - Pilocarpus Jaborandi

Melilotus - Melilotus Officinalis

Mugwort - Artemisia Vulgaris

Mustard - Brassica Nigra

Onion - Allium Cepa

Pennyroyal - Mentha Pulegium

Rue - Ruta Graveolens

Sassafras - Sassafras Albidum

Thuja - Thuja Accidentalis

Wintergreen - Gaultheria Procumbens

Wormseed - Chenopodium Ambrosioides Var. Anthelminticum

Wormwood - Artemisia Absinthium