Door of Perception

Door of Perception is the practice of Dorien, a Netherlands-based psychedelic guide, coach, and medical anthropologist who co-founded the OPEN Foundation in 2007 and brings over 20 years of experience in harm reduction at festivals such as Kosmicare, Zendo, and Psycare. She offers online courses for safe DIY psychedelic journeys, one-on-one psilocybin truffle sessions in Amsterdam, and training workshops for guides and mental health professionals.