Rheological methods can be successfully applied to objectively and
quantitatively describe sensory attributes of thickeners if necessary
attention is paid in choosing the right rheological methods. The
occurrence of wall slip and thixotropy may contribute to the sensory
perception of hydrogel-based personal care products and
should be characterized. We have determined that a significant
correlation can be made between slip velocity and the initial and
rub-out spreadability of the hydrogels. The applied shear rate
range may contribute to the material’s response to a given deformation
and to the sensorial perception of the product. The correlation
between sensory attributes showed that cushion, slipperiness
and pick-up are related, whereas initial and rub-out spreadability
are related, but are in contrast with cushion, slipperiness and
pick-up. These trends are in good agreement with existing literature.
Using FT analysis in LAOS can be effective in correlating sensory
rating results in skin/hair gels. Results indicate that the surface