Slip melting point determination of lipstick

Introduction The slip melting point (SMP) is defined as the temperature at which a sample rises in an open capillary upon heating under defined conditions (Figure 1). In the quality control of cosmetics the SMP plays a prominent role. Furthermore, this method can be employed to control the quality of fats for edibles as cacao butter or palm oil [1]. Here, as an example, it is shown how the SMP of lipstick can be determined using the M-565.