A method for simultaneous separation and determination of two coumarins,dicumarol and cyclocoumarol,in cosmetics by HPLC-diode-array detector(DAD) was developed.
The external factor like chemical agent, the cosmetics, the zootoxin, the fish and shrimp, the pollen, the dust, the solarization, scratch with the finger grasp and so on.
Physical appearance seems to be only part of the equation.Despite the billions of dollars forked over every year for cosmetics and beautification procedures, looks aren't the whole kit and kaboodle.