Formulation Issue Analysis\n\Based on the formula and steps you provided, the issue of the cream not combining is likely due to the incompatibility of the ingredients and the mixing method with the intended emulsion type.\n\nHere are the key points:\n\n* Zinc Oxide 35nm Liquid: This ingredient is a dispersion specifically designed for water-in-oil (W/O) emulsion systems. It is not recommended for use in oil-in-water (O/W) emulsion systems. Based on your mixing method (adding the water phase to the oil phase), you seem to be attempting an O/W emulsion, which conflicts with the requirements of Zinc Oxide 35nm Liquid.\n* Satin Cream Maker: This emulsifier and thickener is designed to be added to the water phase without heat. Your method involves heating it in the oil phase, which can damage the polymer and weaken the formula.\n* Mixing Method: The method of adding the water phase to the oil phase is typically used for creating W/O emulsions. If you intend to create an O/W emulsion, the oil phase should be added to the water phase while blending.\n\nYour suspicion about the Zinc Oxide not dissolving is not entirely accurate. Zinc Oxide 35nm Liquid is a dispersion, meaning the particles are already dispersed in a carrier. The issue is not dissolution but its compatibility with the overall emulsion system.\n\n## Recommendations\n\To resolve this issue, you have two main options:\n\n1. Change the Zinc Oxide: Use a type of Zinc Oxide dispersion that is compatible with oil-in-water emulsions, such as Zinc Oxide Nano EasyDisperse™. If you choose this option, ensure you follow the correct mixing instructions for Milk Lotion Maker (add to oil phase, heat) and Satin Cream Maker (add to water phase, no heat), and add the oil phase to the water phase while blending for an O/W emulsion.\n2. Reformulate for Water-in-Oil: If you want to use Zinc Oxide 35nm Liquid, you should reformulate your product as a water-in-oil emulsion. Follow the mixing instructions provided in the description for Zinc Oxide 35nm Liquid, which typically involves mixing the oil/silicone phase (including the Zinc Oxide 35nm Liquid) and gradually adding the water phase while blending.\n\nAdjusting the oil content might help with stability once the correct emulsifier system and mixing method are used, but the primary problem lies in the fundamental incompatibility of the ingredients and process with the desired emulsion type.