| 摘要 |
<p>A cosmetic preparation containing as the essential ingredient at least 1 wt.% of hydrofluoro ether which has a viscosity lower than 5 mPa . s at 25 °C and is represented by the general formula (1): CnHmFl-O-CxHyFz wherein n is a number of 1 to 12; m is a number of 0 to 25; l is a number of 0 to 11; m+l = 2n+1; x is a number of 1 to 12; y is a number of 0 to 25; z is a number of 0 to 11; and y+z = 2x+1 (provided that not both of m and y are zero and not both of l and z are zero at the same time). The cosmetic preparation does not destroy the environment, is highly safe for the skin, and has an improved feeling in use.</p> |
