Cosmetics
                The flake at left is a pearlescent particle added to many
                  cosmetics
                  to give sparkle. The colors shown by these flakes are thin film interfence colors
                  and not
                  the result of pigment or stain. The red pigmented area is from face powder. 
              
              
                Transmitted Off Crossed Polarized Light Illumination
                
Definition/Function:
                Significance in the Environment:
                Characteristic Features:
                Associated Particles:
                References: