Unstable active ingredient delivery and pigment sedimentation lead to inconsistent cosmetic performance. Precise microfluidic phase control stabilizes bismuth oxychloride and fatty esters within the skin barrier matrix to ensure formulation shelf-life.
The presence of hydrophobic and hydrophilic pigments alongside fatty acid esters in aqueous formulations leads to phase separation and visual inconsistency. Preventing this degradation ensures uniform pigment distribution and long-term shelf stability in multi-phase cosmetic systems.