Chemically Talking, this molecule is "midway" amongst Sorbitan Oleate and Sorbitan Trioleate, that means that it's also an attachment of sorbitan (a dehydrated sorbitol (sugar) molecule) with the unsaturated fatty acid Oleic Acid, but in a ratio of two:3 that's why the "Sesqui" section from the molecule's name. If you want oil cleansers but don't