Animal fats in soap
create dirty bubbles.
They create scum trouble
and ethics problems double.
Text:
It is no accident that some soap factories are near slaughterhouses.
List of soaps made with cow fat (sodium tallowate)
or pig fat (glycerin, tallow etc) include
Zest, Ivory, Lava, irish Spring, Jergens, Dial, Love, Camay and many many more.
These are not clean soaps. The bubbles are dirty and leave scum
The effect of using soaps with animal fat on the skin has not
been sufficiently studied
https://www.swaminarayan.nu/useful/soaps.shtml