High moisture content in solid bars typically leads to mushiness, structural collapse, or excessive softening. Maintaining mechanical integrity while incorporating high water levels prevents product degradation during use.

Water-soluble active ingredients are frequently washed away during the rinsing process rather than remaining on the skin. Improving retention ensures that functional additives provide measurable dermatological value instead of being wasted.

Conventional fatty acid soap formulations often suffer from cracking, mushing, or excessive wear rates during use. Improving structural stability and solubility profiles ensures the bar remains functional and aesthetically acceptable throughout its lifecycle.