軟なん石せっけん

noun

soft soap; potash soap

A type of soap made with potassium hydroxide, often liquid or semi-solid. Contrasts with カリ石鹸 (potash soap) in some contexts, but here specifically refers to soft soap, especially potash-based.

See also: カリ石鹸

• 軟なん石せっけんはカリウム塩えんを含ふくむため、固こ形けい石せっけんより柔やわらかい。

  Soft soap contains potassium salts, so it is softer than bar soap.