I think CBE is on to something here!...lol However, one of the reasons we have to have a stronger smelling bar of soap is, MAYBE, because of the dreaded candle nose! Face it, we are immune to the scent. People walk into my house and say..."OMG it smells so good in here"..I cant smell a thing. I dont smell the scent of my soap sometimes too....but my co workers can smell it. I usually use one of my co workers as a tester.....I can always smell the soap on her...but not on myself. I think our noses are shot!...lol But, some FO's will fade in soap...just part of the chemical process breaking down the FO. I dont think you are using the wrong types of oils. Soaping oils can be hit or miss.