In order to meet the specification requirement, cosmetics
preparations are usually complex dispersion (suspension or
emulsion). The addition of one raw material directly modifies
the stability of the dispersion and so each formulation must
be analyzed and validated. For example in sunscreen
application, the choice of the sun blocker directly affects the
final stability of the dispersion.
In this note, using the Turbiscan™ technology, the effect of
two different sun blockers on the final stability was studied.
Moreover, the mean diameter of the particles was measured
directly in the final product without dilution.
