The agony and the 'ex'tasy - S4-E1
Revealing mistake: When Charlotte arrives at Carrie's apartment to pick her up, Carrie is in the shower. As Charlotte walks towards the bathroom, there is a clear shot of Carrie showering. Sarah Jessica Parker appears to be wearing some sort of minimal tan colored undergarments, to protect her modesty while filming. (00:24:20)
Answer: A popular brand of sexual lubricant. See http://www.k-y.com/index.jsp.
J I Cohen