Plain old bulk.
If liquid package-free bulk isn’t available to you, consider buying plain old bulk instead. This Castile soap can be watered down (1 part soap: 8-10 parts water) to clean dishes, hair, make up remover, dog wash, carpet, surface, toilet, grease, leather, and loads more. Yes, it’s plastic, but it’s a huge improvement on buying multiple bottles.
Anyone in remote areas with limited access to bulk? I’d love to hear how you reduce your packaging.