This Soap Thing is kinda Weird.. Before that yu could use Water befor the cinematics to CLean the Blood.. i Bet nobody noticed this.. haha i always laoght a lot of people askin for mods to do that when the mecanic its already in the game but nobody try it out.. (its the Same mechanic when yu Remove Acid and other Stuff from yu in Battle..) Just Trow a Botle of Water before yu talk with someone and yu will be clean.
(No mod Needed, No Soap Needed.. just need water.haha)
Even Larian dosent talk about this.. funny thing.. like ai said.. the mechanic for that its already in the game since day 1.