Hidden Allergy Risks Lurk in Aromatherapy Candles and Essential Oils

Aromatherapy candles and essential oils may pose hidden risks for allergy sufferers. New research highlights how certain fragrances and low-grade ingredients can trigger reactions. Regulations now require clearer labelling to help consumers avoid potential allergens.

Citrus oils, cinnamon, and clove are among the most common culprits for allergic reactions. Compounds like limonene, cinnamaldehyde, and eugenol in these oils can irritate the skin or respiratory system. Even small amounts may cause problems for sensitive individuals.

Poor-quality essential oils sometimes contain plant debris or insect remnants, adding to the risk. Similarly, candles made with low-grade wax or paraffin can release particles that provoke allergies. The quality of ingredients plays a key role in how safe these products are. The International Fragrance Association (IFRA) has tightened rules to address these concerns. As of 2026, its 47th Amendment restricts or bans 105 potential allergens in fragranced products. Suppliers must now list 26 specific allergens on labels if their concentration exceeds 0.001% in leave-on products or 0.01% in rinse-off items. For candles, classified under Category 8A, sensitizers like citral are limited to 0.6%. The IFRA enforces these standards through compliance programmes to improve product safety.

Stricter labelling under IFRA rules aims to reduce allergic reactions from scented products. Consumers can now check ingredient lists for known irritants before use. The changes apply to essential oils, candles, and other fragranced goods sold in the EU.