The series of Rejuvenate dialogues are intended to foster debate across a community of practice working on child and youth rights. Our first dialogue examined the principles that can help support child and youth-centred research and community development. During the dialogue, we highlighted two key REJUVENATE principles: the importance of relationships, and the energy that young people can contribute to building new visions of the future. We met online on 14th September 2021. Presenters and participants joined from around the world, reflecting the diversity and breadth of experience in the field. We invited reflection on what the REJUVENATE principles get right, where they need to expand, and what they could improve on.