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Aromatherapy is based on the theory that essential oils, derived from plants, have beneficial properties. The oils are concentrated and it is important to use them according to instructions, for example diluting them before applying to the skin. Many types of aromatherapy can be used at home.

The oils may be:

  • applied directly to the skin, often accompanied by massage
  • heated in an oil burner to produce a pleasant aroma
  • added to a bath

There is some evidence that aromatherapy may be effective in helping people with dementia to relax, and that certain oils may have the potential to improve cognition in people with Alzheimer's disease. Research has specifically highlighted the potential benefits of the use of lemon balm (Melissa officinalis) to improve cognition and mood in the treatment of Alzheimer's disease, and lavender oil to reduce occurrences of aggressive behaviour in dementia. However, there is currently not enough good evidence to state categorically whether or not aromatherapy is beneficial.