A cosmetic comprising a phosphoric triester represented by the general formula : wherein R1 and R2 are independently an alkyl group having 1 to 8 carbon atoms, R3 is an alkyl group having 1 to 4 carbon atoms, X, Y and Z are independently an alkylene group having 2 or 3 carbon atoms, l and m are independently a number of 1 to 10, and n is a number of 0 to 10, and a skin activating component. The mask body has a substantial headband shape. Light components with wavelengths in the visible spectrum are introduced to a second imaging device and then imaged. In both aspects, particulate emission during sputtering is reduced. The combinatorial position coding technique includes generating a lexicographical index for a selected subset of spectral lines, where each lexicographic index represents one of a plurality of possible binary strings representing the positions of the selected subset of spectral lines.