How long before a treatment should a patch test be carried out?

A patch test is an essential procedure in aromatherapy to determine if a client will have an adverse reaction to a particular essential oil or blend of oils. Conducting a patch test 24 to 48 hours before the treatment is the most effective timeframe because it allows sufficient time for any potential allergic reactions to develop.

By testing at this duration, the practitioner can observe the area for any signs of irritation, redness, or allergic response, which may not be apparent immediately after application. If a reaction were to occur, waiting at least a day or longer would help ensure that the test is conclusive and the practitioner can make an informed decision about whether to proceed with the essential oil application during the actual treatment session. This not only safeguards the client's wellbeing but also upholds the professional standards of practice in aromatherapy.