Historical clue formulations

• Fatty acid compound — 2024-04-10
• Fatty acid compound — 2017-06-11
• 6-Across ingredient — 2015-05-02
• Olive oil component — 2008-09-08
• Organic salt — 2007-07-30
• Ingredient in some soaps — 2005-12-09
• Soap ingredient — 2005-11-13
• Salt of a certain acid — 2004-03-28
• Chemical salt — 2003-06-07
• Soap stuff — 2003-06-06
• Soapmaking compound — 2002-05-18
• Pharmaceutical ointment — 2001-12-23
• Acid salt — 1995-06-06