Stable multiple emulsions with a small proportion of primary emulsion conta
ining different viscosifying agents in the outer aqueous phase were formula
ted. The multiple systems were assessed by evaluating several parameters, s
uch as the macroscopic aspect, droplet size, release rate, and accelerated
stability under elevated temperatures. The effect of different viscosifying
agents at different concentrations on the stability and the multiplicity o
f the multiple emulsions was examined. The viscosity increased by increasin
g the concentration of the viscosifying agents. It also appeared that the v
iscosifying agents increased the temperature stability of the multiple emul
sions. As a result, the formulation viscosified with Klucel was more stable
, while the one prepared with carbomer viscosified the outer phase at much
lower concentrations with much better skin feel.