Abstract
An attempt was made to obtain informations on the correlation between the rheological characteristics and the sensory assessments for a variety of cosmetic emulsions appeared in the commercially available forms such as milk lotions, creams, massage creams, etc. The flow curve and stress relaxation behaviour of each emulsion sample were measured by means of a cone-and-plate viscometer so as to evaluate the rheological features of the emulsion samples, while the sensory assessments of the samples were made with 10 panels.
The results obtained can be summarized as follows:
(1) A series of the sensory terms defined by use of ordinary expressios on the basis of consistency, spreadability, yield value, and so on for the cosmetic emulsions may closely relate to the rheological parameters of each sample evaluated from the flow curve.
(2) Cluster analysis suggested that the sensory assessments with cosmetic emulsions can be divided into some groups, which correspond to the flow characteristics of each cosmetic emulsion.
