ISO 17679:2016 establishes the service requirements of a wellness spa, the main supporting processes and the quality of service to be provided to the client. ISO 17679:2016 can be used by all types and sizes of wellness spas even if it is part of another activity (e.g. accommodation facilities, fitness centres and hospitals). ISO 17679:2016 does not include any accommodation or food and beverage requirements. ISO 17679:2016 does not apply to medical spas and thalassotherapy centres. ISO 17679:2016 does not cover decisions that are related to medical professions, medical training or any religious aspects.