A tropical composition is provided. The topical composition can be prepared
by diluting a topical composition precursor with water and adding
additional components, if desired. The topical composition precursor can
be prepared by melt processing a hydrophobic polymer composition that
includes repeating pyrrolidone/alkylene groups wherein the alkylene groups
contain at least 10 carbon atoms, and a hydrophilic polymer composition
including repeating carboxylic groups and/or repeating hydroxyl groups. A
topical composition precursor and methods for manufacturing and using a
topical composition are provided by the invention.