Chemically Talking, this molecule is "halfway" between Sorbitan Oleate and Sorbitan Trioleate, meaning that it's also an attachment of sorbitan (a dehydrated sorbitol (sugar) molecule) with the unsaturated fatty acid Oleic Acid, but inside a ratio of 2:3 for this reason the "Sesqui" aspect from the molecule's name. When Farmacy says "makeup meltaw