About Kirk's Natural

Kirk’s Natural offers classic coconut Castile soaps made with simple, plant-based ingredients since 1839. Their gentle soaps are family-friendly and eco-conscious—suitable for use from head to toe.

At Thrive Market, we value Kirk’s for preserving traditional, clean soapmaking with quality you can trust.

Coconut-based Castile soap
Fragrance-free and gentle
Plant-derived, biodegradable ingredients
Family- and pet-safe
Multi-use for body & home

Kirk’s Natural Castile soap is a clean, gentle staple with heritage you can count on.

Best Product from Kirk's Natural

Castile Soap, Fragrance Free

Fragrance-Free Castile Soap delivers gentle cleansing without additives—perfect for sensitive skin or household use.

Why We Love Kirk’s Natural

As America's oldest natural soap brand, Kirk’s blends simplicity, care, and tradition—creating products that respect people and planet.

Clean soap, clean conscience.

More From Our Blog

Soothe your skin with our DIY scrub guide.

Sensory care, simplified.

Whip a bubbly treat with our homemade bubble bath recipe.

Fun meets gentle.

Discover essential oils with our intro to essential oils.

Nature in every drop.

Kirk's Natural, Castile Soap, Fragrance Free