164 JOURNAL OF THE SOCIETY OF COSMETIC CHEMISTS ß ISOTROPIC OIL pNASE DIL ,ooz -.,., MIGLYOL 112 Figure 6. Importance of isotropic oil phase in the ternary diagrams water/oil/surfactants (Montane 80©-Montanox 80 ©) obtained with different HLB's. The zone corresponding to the oily isotropic phase is represented in black on each diagram. Its surface area is expressed as % in relation to the total surface of the diagram (data in parentheses). ß ISOTOOPIC OIL PHASE MINERAL OIL • % OIL loo • ,.,., MIGLYOL 812 Figure 7. Importance of isotropic oil phase in the ternary diagrams water/oil/surfactant (Simulsol 92©-Simulsol 96 ©) obtained to different HLB. Supplement to legend: see figure 6.

OCCLUSIVITY OF AQUEOUS EMULSIONS 165 60 15 40 t0 •- 20 . 5 -- i,,1=1 ß -' 60 15 I : 40 10 : I I I I I I I I I I 4,5 6,5 8,5 10,5 12,5 15 H.L.B. 20 Figure 8. Diagram showing the existing relationship between the occlusivity of the emulsion water/perhydrosqualen/surfactant: 80/15/5 to different HLB's and the importance of the oily isotropic phase in the ternary diagrams obtained with the same constituents for each of the HLB's. The importance of the oily isotropic phase is expressed in % in relation to the total surface for the diagram (see figure 6). --•--•--•-- ester surfactant (Montane 80©-Montanox 80 ©) --I--I--I-- ether surfactant (Simulso192©-Simulso196 ©) 60 40 • 20 ß • 60 40 20 15 10 o• 10 I I I I [ / I I I I I 4,5 6,5 8,5 10,5 12,5 15 H.L.B. Figure 9. As figure 8 replace perhydrosqualen by mineral oil.