At the invitation of colleges, associations and professional aromatherapists, Rhiannon regularly travels abroad to countries such as Ireland, Great Britain, Japan, USA, Canada and Australia. Whether to lecture at an international conference or teach an intensive class or workshop, she always researches and prepares well in advance, adapting the subject matter to the needs and level of participants.

Her effective teaching style ensures that students are encouraged to extend their knowledge and skills in a safe learning environment, delivering technical details in a way that is easily understood and implemented.