Preparation of Visible Water(biogel)/Solid Lipid/Water Multiple Emulsion for Cosmetics

We present a simple method that produces visible solid lipid microparticles (SLMs) encapsulating biogel particles for cosmetics. Biogel particles are prepared via W/O/W emulsification, and then SLMs encapsulating biogel particles are produced through continuous W/O/W multiple emulsification. We find that the presence of solid lipid affects the appearance, size, structure, crystallization properties, and physical protection of multiple emulsions, as observed through particle size analysis, fluorescence microscopy, polarized light imaging, and differential scanning calorimetry (DSC). This multiple emulsification method provides significant guidance for encapsulating various hydrophilic and lipophilic active ingredients in biogel particles and SLMs, respectively.