Nequia Group BV is an oral-care product development and formulation consultancy based in Leiden, The Netherlands. Led by Peter Helversteijn, Nequia helps new and established brands develop oral-care products, overcome formulation challenges and navigate the path from concept to market.
Our expertise spans toothpaste, oral gels, mouthwash, oral sprays, whitening systems, hydroxyapatite technologies, microbiome-friendly oral care and product-development support.
With more than 15 years of hands-on oral-care formulation and manufacturing experience, Nequia supports companies across the full product-development cycle:
Whether you’re refining an existing formula or building a new oral‑care line from scratch, we help you move from concept to production with confidence.
Nequia operates with access to laboratory facilities at the BioPartner 3 at Leiden Bio Science Park, enabling controlled testing, iterative formulation work, small‑scale prototyping, stability evaluation, and ingredient compatibility studies.
This allows us to combine scientific precision with practical, real‑world formulation development.
We follow a structured, methodical process designed to reduce risk and accelerate development:
Understanding your goals, constraints, claims, and regulatory requirements.
Developing or optimizing formulas based on performance, stability, sensory profile, and manufacturing feasibility.
Evaluating stability, compatibility, whitening performance, and active delivery.
Iterating based on data, feedback, and manufacturing requirements.
Ensuring a smooth transition from lab to pilot to full production.
Every project is handled with precision, transparency, and scientific integrity.
Matt is an oral‑care formulation specialist with more than 20 years of experience in whitening systems, nano‑hydroxyapatite toothpaste, mouthwash, and professional dental products.
He is listed as inventor on multiple oral‑care patents, including:
Peter Helversteijn brings more than 15 years of hands-on experience in oral-care formulation, product development and manufacturing support. His expertise spans hydroxyapatite technologies, whitening systems, microbiome-friendly oral care, ingredient selection, formulation troubleshooting and the development of commercially viable oral-care products.
By combining scientific understanding with practical industry experience, Peter helps bridge the gap between product concepts and successful market launches.
Our mission is to help companies develop oral-care products that combine scientific credibility, technical excellence and commercial viability, while making complex formulation and development challenges easier to navigate.
If you’re developing a new oral‑care product or improving an existing one, we’re here to support you.
Email: peter@nequia.com
Location: Leiden, The Netherlands
