Welcome back to this series on creating creamy facial cleansing milks with Sensolene® or isopropyl isostearate (IPIS). In part one, we created a warm process formula with emulsifiers like Polawax, Montanov 68 MB, Simulgreen 18-2, and Simulsol/Lotionpro™ 165; in parts two and three, we created a cold process formula with Jeesperse® ICE-T-LB-T-NS or Jeesperse® silicone. In…