The Kolorex Team

Bringing together diverse skills to bring the benefits of New Zealand’s native Horopito to you.

Founder / Director – Peter Butler

Company founder, Peter Butler was growing subtropical fruit organically in Golden Bay New Zealand when the Kolorex story began.
Most of his property was covered in the dense and varied vegetation typical of rainforests.  And it intrigued Peter that none of the hundreds of different indigenous plants on the property were used in modern herbal medicines.
Being an historian, he began researching traditional Maori healers (tohunga) and tracking down the diaries and journals of early colonial ethnobotanists to investigate traditional European and Maori usage.
Forest Herbs commissioned its own research and now its horopito plants and Kolorex products help people around the world.

General Manager – Dr Amanda Wiggins

Amanda is responsible for all aspects of the day-to-day running of the business. This includes new product development, identifying new business opportunities and sales & marketing.

Amanda has a research bent and a love of business.  She holds a PhD in Neuroscience from the University of Melbourne, Australia and is a Board Member of Natural Products New Zealand – the organisation for New Zealand’s natural products sector.

Sales Manager – Terry Bone

Terry works with our international distributors to help grow Kolorex sales.  He supports all aspects of Kolorex business overseas in some interesting locations including South Africa, Italy, Hong Kong and the United Kingdom.

Terry has a broad and thorough business background, bringing expertise in commercial negotiations, customer and supplier relationships, sales and management.

Research and Quality Control – Carol Hulse

Internal expertise – Carol Hulse
Carol Hulse oversees the scientifc and technical aspects of Forest Herbs Research. This includes manufacture, quality control, testing and export of Kolorex products. She has experience as both an analytical chemist and quality manager.


External expertise – Cawthron Institute
The expert team at Cawthron Institute, Nelson, test the antifungal efficacy against Candida albicans. Cawthron is New Zealand’s largest independent research institute. It provides high quality analytical services that underpin the integrity of New Zealand products for domestic and international consumption.


External expertise – Southern Cross Plant Science
Southern Cross Plant Science, at Southern Cross University in Australia, determines the polygodial concentration in Kolorex Horopito Oleoresin. This facility has leading expertise in phytochemistry and ethnopharmacology as well as state of the art scientific instrumention for chemical analysis.

Office Administrator – Matt Rausch

Matt is responsible for the smooth running of the office including accounts and dispatch of orders.  Matt is an experienced administrator and office manager and has extensive IT knowledge and is an expert at using financial software.  Matt’s previous roles include being responsible for national and international distribution and documentation, and various office management roles.

Matt has an eye for detail and a bent for doing things right, and is also bilingual in English and German which comes in handy for communicating with our European customers.