Serenity Soap Co. is a family operation making beef tallow soap the old way: rendered tallow, cold-pressed olive oil, and simple botanicals. Tallow is one of the most skin-compatible fats there is, with a fatty acid profile that mirrors human sebum closely enough that your skin just absorbs it. The result is a bar that moisturizes as it cleans, leaving skin soft without any residue. Made in small batches in Idaho, USA.