The problem with adding drops to the texture is that it doesn't account for gravity. If you're posing your characther lying down, or with the arms up or something... it will look fake.

I have bought a few good wet characters (for M3) but they only work in certain situations.

A shader that actually took the orientation of the character into account would be very cool. Ajax has some various skin types in his Free Shader Pack (I believe it's still here in freestuff) - they're all based on Don (I think) but of course the texture map could be swapped for the one you're using.

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You just can't put the words "Poserites" and "happy" in the same sentence - didn't you know that? LaurieA
  Using Poser since 2002. Currently at Version 11.1 - Win 10.