Greencastle Soap Co

Founded in 1991 and based in Spokane Valley, WA, Greencastle Soap Company is a trusted leader in handcrafted soap manufacturing in the InlandNW. With more than three decades of production experience and over 15 years of formulation expertise, Greencastle combines time-honored soap making traditions with modern scalability to serve both emerging and established brands.

As a Professional-level member of the Handmade Soap and Cosmetics Guild, Greencastle Soap Company is committed to high standards of quality, safety, and transparency. All products are backed by insurance, batch tracking, and consistent production practices, offering clients confidence in both product integrity and supply reliability.

Greencastle specializes in cold process bar soap, producing a diverse range of formulations including vegan soaps, tallow-based soaps, goat milk soaps, and unique specialty bars crafted with ingredients such as regional craft beers and wines. Their signature approach reflects a “farm-to-body” philosophy with a strong emphasis on sustainability and ethical sourcing.

Key ingredients are carefully selected for both quality and story. Tallow is sourced from a local regenerative farm with grass-fed cattle, while goat milk is produced directly from the company’s own herd. Many formulations incorporate a high percentage of organic ingredients, and palm-free options are available in both tallow and goat milk lines. Products can be created using essential oils, fragrance oils, or tailored scent profiles, including fragrance-free options for sensitive markets.

Greencastle Soap Company offers a full suite of B2B services, including wholesale (ready-made products), private label, fully custom formulation, and contract manufacturing. With low minimum order quantities—starting at just 12 units per scent for wholesale and private label—and scalable production of up to 500 bars per day, the company is uniquely positioned to support both small-batch artisan brands and growing retail operations. Custom formulation projects begin at 250 units per scent and are developed from scratch to meet each client’s specific vision and market needs.

In addition to manufacturing, Greencastle provides packaging and labeling services, helping clients streamline the production process from concept to shelf-ready product. Standard wholesale orders are typically fulfilled within 1–2 weeks, while private label and custom projects are completed within approximately 30 days. Nationwide shipping and local pickup options are available.

Greencastle’s products are currently carried by respected regional retailers such as Huckleberry’s Natural Market and Rosauers Markets, and the company collaborates with brands including NURST, One Degree Healthy, and Terre Sevyn. Their experience working with both startups and established companies makes them a versatile and reliable partner across a wide range of business stages.

Beyond manufacturing, Greencastle Soap Company is deeply rooted in education and community. Through workshops at their retail store - Maker’s Apothecary, formulation guidance, and hands-on teaching, they support the next generation of makers while maintaining an active retail storefront and production space.

What sets Greencastle apart is its rare ability to deliver true handcrafted, small-batch quality at a scalable level—without compromising ingredient integrity or sourcing ethics. This balance makes them an ideal partner for boutiques, high-end retailers, subscription boxes, and natural markets seeking authentic, story-driven products with consistent supply.