3 ms·Stearic acids are used everywhere, including detergents, shampoos, soaps, etc. TIL they're made from tallow.by ipsum2 4y agoStearic acids are used everywhere, including detergents, shampoos, soaps, etc. TIL they're made from tallow.derbOac 4y agoNot all. Some is from plants, like palm or shea.wkat4242 4y agoYeah I always assumed Palmolive was made of palm oil. Though with all the misleading advertising these days who knows.. I don't know chemistry well enough to determine this.