Molly Vollmer and Katherine Jarnigo are co-CEOs of Kirk's Family of Natural Brands, the parent company behind The Grandpa Soap Company and SOF and Kirk's. They join Grow Good to discuss what it takes to modernize legacy consumer brands without compromising what made them trusted in the first place.
The conversation explores the operational realities of values-driven growth: resisting fad ingredients, managing commodity shocks, navigating retailer expectations, and building differentiated brands in an increasingly crowded natural products category. Molly and Katherine share how they think about stewardship versus short-term optimization, why they refused to dilute Kirk’s coconut oil formula despite severe margin pressure, and how they use consumer clarity, packaging, sustainability investments, and strategic restraint to keep century-old brands relevant for the next generation.
It’s a candid look at long-term brand building, disciplined leadership, and the systems required to scale without losing trust.
01:55 – Stewarding brands with 100+ year histories
02:54 – Innovation guardrails for legacy brands
03:53 – Lessons from chasing trend ingredients
04:59 – Learning the business from the ground up
07:12 – Identifying growth opportunities in natural products
10:38 – Differentiating three brands without cannibalization
14:49 – Managing innovation across distinct consumer segments
18:27 – Aligning philanthropy with brand strategy
23:44 – The coconut oil pricing crisis and margin pressure
26:30 – Why they refused to dilute the Kirk’s formula
31:04 – Communicating value in seconds at shelf
39:18 – Operating as sisters and co-CEOs
43:21 – Advice for founders balancing growth and values