Chemically Talking, this molecule is "midway" involving Sorbitan Oleate and Sorbitan Trioleate, indicating that it is also an attachment of sorbitan (a dehydrated sorbitol (sugar) molecule) with the unsaturated fatty acid Oleic Acid, but within a ratio of 2:3 consequently the "Sesqui" portion within the molecule's title. If you want oil cleansers