Brun is a young Mexican activist who has been involved in harm reduction since 2009. He is currently the Harm Reduction Program Coordinator of the youth-led Mexican-based organization Espolea and works as a peer educator within the youth institute of Mexico City developing peer-led campaigns on harm reduction and drug policy reform. Brun has been involved in the creation of several projects and initiatives both for injected and non-injected substance use like the Substance Analysis Program (P.A.S.) and the nightlife interventions that are being implemented in Mexico and other countries of the region, as well as educational resources like the massive Spanish-based database on psychoactive substances The Universe of Drugs.
He also is behind the notorious campaign whose face is a puppet called Lugo which talks about harm reduction for younger audiences throughout the internet. Brun is also part of different regional and international networks such as Youth Rise, Mind Surf, the (Nightlife) Harm Reduction Network of the Americas and he is currently the regional representative of the Latin American Network of People who Uses Drugs (LANPUD) for the board of the International Network of People who Uses Drugs (INPUD).
Besides actively working in the international drug policy reform movement he is deeply involved with alternative medicine, holistic therapy, music and vibrational medicine, psychedelic research and science. Brun is also the founder of the Psychedelic Society Mexico, which works to provide a social platform and network to support and promote a new approach to the potential benefits of the psychedelic experience as well as the therapeutic, mystical, traditional and religious use of sacred plant-based medicines.