Figure 1. Change in water activity of humectants with time.
Figure 2. Comparison of contact angles (a) GL, (b) 1% HA, (c) OHE(H), (d) OHE.
Figure 3. Optical micrographs of dispersed wheat germ oil in humectant/water (1 : 1). (a) GL, (b) 1% HA, (c) OHE.
Figure 4. Comparison of stickiness represented by differences between initial and maximum tension values of the humectant.
Figure 5. Comparison of adhesiveness among the humectants.
Figure 6. Comparison of viscosity among the humectants (RV-02 spindle).
Figure 7. Change in weight loss (%) of cosmetic essences containing different humectants (10%) with time.
Figure 8. Change in adhesiveness of cosmetic essences with different humectant and the added content.
Figure 9. Change in viscosity of cosmetic essences with different humectant and the added content.
Table 1. Composition of Essences
Table 2. Surface Tensions of Humectants
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