Flowers of Zinc. Used to impart opacity. A creamy white ointment used medicinally as an astringent, antiseptic and protective in skin diseases. Zinc is believed to encourage healing of skin disorders. It is insoluble in water.
The zinc salt of PCA. PCA (Pyrrolidone Carboxylic Acid) Employed in the manufacture of polyvinylpyrrolidone. A high boiling solvent in petroleum processing. On the basis of available data, the CIR Expert Panel concludes that it is safe as used in cosmetic formulations but should not be used in products containing nitrosating agents.