[NubianSoaps.com]

And if you look at this logically. Any butters and oils that are free floating and not married to the lye, are not saaponified. So it makes you soap soft, and it may not cure correctly if there is too much left over. Sure get your percentages up to 6 or 7%, but true superfatting is nothing but label appeal, otherwise you would have oily hands from sudsing your soap, ruined labels and a too soft of bar of soap.

So a superfatted bar of soap is the opposite of lye heavy, where there isn't enough butters and oils for the lye to marry with. Vicki