Historical clue formulations

• Use a tissue on — 2019-11-30
• Blot gently — 2016-08-07
• Blot with gauze, say — 2011-04-24
• Touch lightly, as the corner of one's eye — 2007-04-02
• Lightly touch — 2006-06-08
• Pat — 2005-05-06
• Sponge gently — 2003-03-21
• Pat — 2002-11-21
• Sponge gently — 2000-10-06
• Sponge gently — 2000-01-03