Pregnant or Lactating Women
Women who are pregnant or breastfeeding need to be aware that there are certain essential oils which should not be applied to the body at this time, and these are listed below. In all other methods , these women should use the minimum quantity of essential oils recommended in any particular section. (The oils listed here are in addition to those which should not be used by anyone which are listed under Safety and Precautions.
| Aniseed | Clary Sage | Marjoram | Rosemary |
| Basil | Clove | Myrrh | Sage |
| Bay | Cumin | Nutmeg | Spikenard |
| Birch | Fennel | Oregano | Tarragon |
| Black Pepper | Hops | Parsley Seed | Thyme |
| Cedarwood | Hyssop | Peppermint | Valerian |
| Cinnamon | Juniper | Pimento Berry | |
| Cistus | Mace |
People on Medication
Use half the recommended dosages. For example, if it states 'use 4-10 drops', use between 2 and 5 drops.
People using homeopathy
It's thought by some homeopaths that essential oils and other strong smells negate the effects of homeopathic treatments.
Tranquillizer Addiction
Use half the recommended dosage. For example, it it states 'use 4-10 drops', use between 2 and 5 drops.
Substance Addiction
Use half the recommended dosage. For example, if it states ' use 4-10 drops', use between 2 and 5 drops.
Alcohol Addiction
Use half the recommended dosage. For example, if it states 'use 4-10 drops', use between 2 and 5 drops.
Reference : The Fragrant Heavens / Valerie Ann Worwood