The Third Wave is a new era of psychedelics defined by practical, measured use for specific purposes. It is an era not for ‘dropping-out’ and rebelling against society, but for integrating psychedelics into our mainstream culture; an era invigorated by the tremendous upside of responsible psychedelic use rather than paralyzed by misguided fear of their possible negative repercussions.


Let's Go on a Journey Together

There is one modality that individuals across eons have used - often in secret - to better understand themselves, in both their professional work and personal lives.

This approach leverages non-ordinary methods to reach elevated states of consciousness that can accelerate personal development, catalyze creative breakthroughs, and unlock realms of the mind previously unexplored.

When used within a structured framework, it is the only modality that creates dramatic, impactful change within just hours of utilization.

What we’re talking about, of course, is the psychedelic experience.

Steve Jobs called it one of the most profound experiences of his life.

Tim Ferriss, best-selling author and tech entrepreneur, has said that all the billionaires he knows, with few exceptions, take this journey on a regular basis.

And Plato formed his foundational beliefs by utilizing the psychedelic experience, thus setting the groundwork for all of Western philosophy.

And now we’re offering this ancient technology to a few select individuals in our groundbreaking ‘Synthesis’ program.


Safe, Legal, and Modern Framework To Facilitate Personal and Professional Breakthroughs

We are facilitating personal transformation for forward-thinking individuals who want to utilize psychedelics within a modern, legal, and medically supervised context.

We administer the truffles in a unique way to eliminate physical discomfort and nausea. Then, taking into consideration your intention, sensitivity, and previous experience, we then optimize the best dosage for you. Finally, we integrate the latest findings and best practices from the psychedelic research community to ensure your experience is as profound and effective as possible.

Nothing like Synthesis has been offered before. In short, we’re making the ‘secret sauce’’ of thousands of self-actualized individuals - one that’s remained underground due to cultural stigma - available to you.

In committing to this experience, you will be a pioneer in your own right, joining a specially curated list of attendees who are contributing to the next conscious evolution of humanity in a significant way.


What Will You Experience at Synthesis?

By attending our Synthesis program just outside of Amsterdam in the Netherlands, you will:

  • Have a legally sanctioned, professionally guided, optimally comfortable, moderate-to-high-dose psilocybin experience in a beautiful, modern setting

  • Catalyze breakthroughs in your self-understanding to live a more meaningful, purpose-driven life

  • Further develop your educational framework on the use of psychedelic substances, empowering you to use these transformational tools in a responsible, intentional manner

  • Connect with other successful, motivated individuals who have a deep, vested interest in the emerging topic of psychedelic use

  • Contribute to nascent psychedelic research, helping to pave the future path for best practices in retreat settings

But, of course, Synthesis isn't just about the experience. It is also about enduring life-changing transformations.

One of the most important aspects of any meaningful psychedelic experience is the integration process. For that reason, as part of your experience at SYNTHESIS, you will learn how to integrate your profound insights through our “Microdosing & Integration” workshop. This workshop will provide you with the necessary educational tools to continue working with these substances in a profound, transformative way.

Then, once you go back home, you will receive lifetime access to the SYNTHESIS ‘Inner Circle’ as part of your retreat commitment. This will be an ever-evolving group that will provide professional support and networking as you continue the process of your own personal development in utilizing psychedelics to grow and mature.  

In fact, we believe our SYNTHESIS ‘Inner Circle’ is the most valuable aspect of committing to this retreat. In joining us for a 3-day Synthesis retreat, you will meet and deeply connect with other ambitious, talented, and inspiring participants who will become valuable contacts in your professional pursuits. You will also get access to all other alumni of SYNTHESIS.

Further, if the fit is right, Paul and Martijn will be happy to facilitate connections for you within their own professional network of executives, change-makers, coaches, and founders to amplify your own personal and professional development.


Words from Synthesis Attendees

Hi guys, just wanted to commend and thank you all for an amazing retreat. The care and attention to each and every person and every detail was very thorough. This is probably the best facilitation and framework for this type of experience I’ve encountered.
— Brandon, 38, Functional Medicine Practitioner, USA
I feel that I made one of the best decisions of my life by deciding to attend the Synthesis retreat. My life has improved on numerous fronts and I have adopted new practices (e.g., daily meditation and free-flow writing) to sustain my new outlook on life.
In addition to gaining profound clarity on the self-betterment intentions I brought with me to the retreat, the bonds and relationships that I built with everyone else there were some of the strongest I have ever felt –– an unexpected dividend of this experience.
— Jan, 27, Mobile Developer, USA

The Team

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Paul Austin

Martijn Schirp

Martijn Schirp


We are Paul Austin and Martijn Schirp.

We’re leaders of two platforms on the intersection of psychedelics and the betterment of well-being:

The Third Wave and High Existence.

We utilize psychedelics in moderate and microdoses for professional breakthroughs and personal development.



Details on the retreat

Exclusive 3-Day Psychedelic Retreat in Amsterdam

We are offering an exclusive 3-day retreat in Amsterdam forward-thinking individuals who want to utilize moderate-to-high doses of psilocybin truffles to catalyze creative breakthroughs, deepen self-understanding, and muster the courage to make the next big ‘leap’ in life.

Our experienced team of facilitators have taken psychedelics hundreds of times, curating a wide range of experiences and outcomes for dozens of other people in the process.

However, this is the first legal opportunity to take psychedelics in a safe, intentional and expert-guided setting to facilitate productive outcomes like heightened creativity, clarity on next steps in your life, and general personal development.

During the experience, we will control for the following six conditions that play an essential role in every psychedelic experience:

  • Set: the mental attitude of a would-be psychedelic voyager

  • Setting: the surroundings in which a psychedelic substance is ingested

  • Guide: a person experienced with non-ordinary states of consciousness who helps to mitigate challenges and channel insights

  • Substance: the type and quantity of psychedelic agent

  • Session: the entirety of a psychedelic trip, including all activities and rituals

  • Situation: the environment, people, and culture from which a person comes to a session and returns afterward

When these vectors are not controlled, and psychedelics are not done in a safe, supportive, and structured setting, many of the benefits will not be experienced. Instead, an individual can easily become overwhelmed with all the unfamiliar sensory input, which can consequently lead to paranoia and confusion, or worse, re-traumatization.

Because of the power of psychedelics, and the strong influence of others on your experience, we limit each workshop to 12-16 carefully selected professionals. This retreat is not open to everyone, and an application process for the 3-day retreat is mandatory for each individual.

After going through our application form we will contact you shortly to set up a mandatory 30 minute call with one of our facilitators. Only after this call and receiving your deposit is your spot reserved.


Three Focal Points of Synthesis

The 3-day retreat will be held with trained, highly experienced professional facilitators in a safe, structured, and legal format. The psychedelic we will use, psilocybin-containing truffles, are legal and socially accepted in the Netherlands. For ease of mind, medical assistance will on site during your psychedelic session. 

Preparation: 1-on-1 conversations with your lead facilitators to help clarify intentions and calibrate your dose level. We also discuss whether you want to optimize your experience for creativity on a professional level, personal development, or for another purpose.

Experience: Consuming the psilocybin truffles at either a low, moderate, or high dose in a comfortable setting with eye mask, moving music, and ample outdoor space to explore both your inner and outer world. 

Integration: Our 'Microdosing and Integration' workshop, which provides guidance and understanding on how to integrate your experience, so you can bring your newfound insights back with you and make concrete, meaningful changes in your everyday life. 

As a note, our team at Synthesis also offers 1-on-1 preparation and integration coaching before and after your retreat in Amsterdam. If you’re looking for support and guidance to cement your changes, please let us know in your application form.


More Words from Previous Attendees

It was very intense while I was going through it. I felt very emotional and compassionate for my loved ones as I thought of them I cried for each loved one and loved them all the more. I really appreciated the retreat it was beautiful and spiritual. I felt like I let out so much emotion and now I can take stress easier because I have more room for it. I also still feel the beautiful compassionate love that I experienced and spend more time thinking about how my interactions affect others. I thought the team were also very good and sincere and I would like to thank them again.
I wanted to share some thoughts after attending the Synthesis Retreat. I’m back in my day-to-day life and I wanted to send you some words of gratitude for all the guidance, conversation, care and knowledge you shared with the group. It was a fantastic group of inspiring people and I find myself missing you and the group already.
Over the last few days since our ceremony I’ve had some of the best conversations I’ve had with colleagues and friends in years. The ceremony and where it took me, it helped me get focus on how I think about my life and profession. I find that it was also key to sorting out the challenges I brought into the ceremony as intentions, but they seemed so trivial when I approached them in my journey. I find myself thinking about them with a different perspective now and it makes all the difference. So to me this was a life changing, before and after thing.

Synthesis is sponsored by MushMagic, who provides the truffles for your experience. You can learn more about MushMagic by clicking the icon below. 


Expanding Your Mind


Your 3-day Synthesis Retreat includes



  • Tools to prepare your intention and educational framework before the workshop

  • Reading materials

  • Self-care modalities

  • Intake call with members of the Synthesis team



Day 1

  • Lunch and dinner on the first day

  • Group sharing circle to build rapport between participants

  • Flight instructions workshop

  • Mind and body exercises to bring you in an optimal mindset

  • Comfortable, relaxing accommodation with the Synthesis team and other participants

  • 1-1 coaching preparation conversation, to help clarify intentions and calibrate your dosage. We will determine dosage based on your needs, experience, and personality, and whether you want to optimize your experience for creativity or a spiritual experience



Day 2

  • Environment optimized for psychedelic experiences

  • Experienced guides to help you work through possible obstacles

  • Initial dose of Psilocybin Truffles and optional follow up doses to increase duration and intensity of the session

  • A structured psychedelic session to work towards your specified breakthrough

  • Comfortable, relaxing accommodation with the Synthesis team and other participants


Day 3

  • 1-1 coaching integration conversation

  • Grounding exercises post psychedelic journey

  • Post-retreat integration workshop, includes protocol and optional substances to continue insights and integration post-workshop (depending on legality)

  • Closing lunch

As an important note, all meals and accommodation will be included with your Synthesis package.

Total Price: 1500 Euros (Excluding VAT)

Available Dates:
2-4 November (Full)
6-8 November (Full)
11-17 November (4 spots left — 7 days / €3500 excluding VAT)
7-9 December (Full)
14-16 December (6 spots left)
18-20 January
25-27 January
8-10 February
15-17 February
8-10 March
15-17 March
29-31 March


More Words from Synthesis Attendees

Thank you again for organising such an amazing event and making it so rewarding for me and the other participants.

You guys made this possible... by your energy and compassion, by your intelligence, experience and humour... and by how you brought the group together skillfully and created an environment that helped everyone open up to one another.

It was quite special to feel so connected with a group of people in just a couple of short days. Everyone in the group really appreciated the opportunity to talk about psychedelics and bio-hacking with kindred spirits who share this unique and special interest.


Is Synthesis Right For You?

Synthesis is Great For You If:

  • You want to connect with ‘like-minded’ individuals and start to build a community around you of people interested in the modern, responsible use of psychedelics

  • You’ve been stuck on a major professional or personal problem for an extended period of time and are looking for creative inspiration

  • You want to explore the outer reaches of your consciousness, unlocking aspects of your mind that have yet to be accessed

  • You’re curious about the utility of psychedelics and want to do them in a safe, legal, and structured setting

  • You feel like there’s a psychological blockage preventing you from reaching that ‘next stage’ in your professional or personal development

  • You want to reset your default mode network

  • You’re open to the potential value of psychedelics but haven’t found the right time and place yet

  • You’re intent on being your ‘best self’ and you want to learn how to utilize psychedelics to accelerate the process of personal development


Synthesis Is Not For You If:

  • You have a clinical diagnosis of depression, bipolar, borderline, PTSD, or schizophrenia

  • You have a family history of schizophrenia or psychosis

  • Currently prescribed to anti-depressant medications (please contact us if you want to be notified when medical spots open up)

  • You are just looking to get high and have fun

Full Disclosure:

Despite the exciting potential for the clinical use of psychedelics, Synthesis is not a retreat for people looking to experience psychedelics to treat a specific clinical condition. By going through the application process, you accept that we can not accept individuals on prescription medication for mental disorders, there is no clinical motivation for your participation, and that Synthesis Retreat will not be held accountable for any issues that arise from your Synthesis Experience.



1. Who will facilitate the sessions and what are their qualifications?

Please refer to the About page for information on facilitators and their qualifications. Please feel free to contact us if you have any further questions.

2. How will the psychedelic sessions be set up?

We will provide a comfortable space with sofas, lounge chairs, and access to the outdoors. Further, we will have the requisite stationary and office tools if you wish to work on your problem in the afterglow of the experience.

3. Why should I invest in this experience if I can take mushrooms at home?

We believe the context of a group retreat and having experienced guides are essential ingredients to properly optimize for safety and getting the most out of a psychedelic experience. From years of retreat experience we know the value of this experience is rooted in the relationships you will build.

4. Can I do more than one retreat?

Yes, you can. In fact, we recommend doing more than one ceremony, whether that is over the course of a week or multiple months. Most research indicate that while a single ceremony is highly effective, the changes are more profound and durable with three or more psychedelic ceremonies. Please indicate if you're interested in doing a series of retreats.

5. Is there any prep or post work included with the retreats?

Prior to the 3-day retreat, you will have a 30 minute call to discuss your specific goals for the retreat. More preparation documents will be sent over nearing your retreat date. During the retreat, you will have multiple 30 minute private conversations to discuss anything that might come up. We will always be available for any assistance post-retreat.

6. Are psychedelic truffles safe?

According to recent studies, psilocybin mushrooms (which have the same active ingredient as truffles) are the safest drug currently available - safer than tobacco, cannabis, and alcohol. These substances are non-addictive, non-toxic, and, when taken within a structured setting, have little to no risk.

7. Where can I learn more about psychedelic truffles?

To get more information about psilocybin truffles, please read through this Essential Guide on Psilocybin Mushrooms.

8. Is it legal to eat psychedelic truffles in Amsterdam?

Here is a brief overview of the legal status of psilocybin truffles in the Netherlands.

9. What are the long term risks associated with psychedelic truffles?

As long as you do not have a pre-disposition to psychosis or schizophrenia, and are currently not prescribed any  there are little to no long-term risks associated with psilocybin truffles.

10. Will my personal information be confidential?

We keep all personal information confidential, none of it will be shared with third parties.

11. I’m excited about this opportunity but nervous about trying psychedelics for the first time. Do you have further resources I can check out?

The best beginning resource is The Third Wave, a website dedicated to psychedelic literacy and education.

12. Can I opt out for the research?

Yes, you may opt out at any time, participating with our research is not mandatory. Part of these retreats is to discover the potential of psychedelics on human development and to improve the integration of these substances in your life. If you do choose to participate, all of your data will be held strictly anonymous.

13. Will there be future retreat dates?

Yes! We are in the process of setting up programming for monthly retreats beginning in April 2019. We are also in the process of planning a retreat for December 2018 and February 2019. 

14. Do you offer 1-to-1 guided sessions if I prefer to do this in private?

Yes, we do! Please use the application form or reach out to us at to get more information on a private psilocybin experience with one of our experienced guides. We also offer 1-to-1 preparation and integration coaching for an additional fee. If you're interested in working with us in this capacity, please indicate this in your application form. 

What are the next steps?

If you see yourself as part of the event, then here’s the deal:

Please We have a hard limit of 16 slots available for each retreat.

Here are the available retreat dates:

  • November 2-4 (Full)

  • November 6-8 (Full)

  • November 11-17 (4 spots left / week long )

  • 7-9 December (Full)

  • 14-16 December

  • 18-20 January

  • 25-27 January

  • 8-10 February

  • 15-17 February

  • 8-10 March

  • 15-17 March

  • 29-31 March

Here’s what we need from you:

1. Fill out the application

Please fill out the following form. Be as truthful and precise as you possible can. We will follow up on all answers and any questions you might have during our preparation call. 

Fill out my application now

2. Make your deposit

We kindly ask all potential participants to make a deposit of €50 before we consider your application. This is a non-refundable deposit. 

After receiving your application we will contact you shortly to set up a mandatory call. For safety reasons, your spot is only reserved after this call.

If you have any further questions, please contact us.

3. Fly to Amsterdam

Once the event draws nearer, we will send you all the practical information you need. We will also ask you to dive deep in a few exercises to optimally prepare your mind and body for this event.

Please arrive to Amsterdam the day before the start of your retreat to allow ample time to rest and adjust. 


about the Location


The Netherlands is one of the most urbanized nations in the world. There are many activities for you to enjoy here. Apart from the ceremony sessions you can go on bicycle rides, visits to museums or important landmarks, and plenty of nature walks. If you're looking for something even more relaxing, the Netherlands also has a lot of wellness centers on offer.