Historical clue formulations

• Like wet makeup — 2018-04-29
• Like cream cheese on a bagel — 2017-03-31
• Like mascara in the rain — 2014-07-06
• Like wet paint — 2013-08-01
• Hard to see through, say — 2012-04-27
• Like wet paint — 2010-11-23
• Like cheap lipstick — 2007-01-11
• Like wet ink — 2000-01-19
• Not kissproof — 1998-10-10