Suspending Gold Leaf in Liquid Soap

The issue of gold leaf sinking in liquid hand soap is typically due to the liquid soap formula not having sufficient viscosity or internal structure to suspend the relatively dense gold particles. Even without oil components, a liquid formula needs a thickening or suspending agent to keep solid particles dispersed.

To prevent gold leaf from settling, you can incorporate a thickening or gelling agent into your liquid soap formula. These ingredients increase the viscosity and create a gel-like network that helps hold particles in suspension.

Based on the available ingredients, two suitable options are:

• AnyGel™ (INCI Name: Dehydroxanthan Gum): This is a water gelling agent known for its good resistance to acids, alkalis, and electrolytes, making it suitable for soap formulations. It creates a gel texture that can help suspend particles. Recommended usage rate is 1-2.5%.
• Aristoflex AVC (INCI Name: Ammonium Acryloyldimethyltaurate/VP Copolymer): This is another effective gel-forming agent for water-based formulas. It increases viscosity and can help suspend solid particles. Recommended usage rate is 0.1-2.0%.

Adding one of these ingredients at the appropriate concentration should increase the viscosity and structure of your liquid soap, allowing the gold leaf to remain suspended evenly throughout the product instead of sinking to the bottom.

It is recommended to start with a lower percentage within the suggested range and gradually increase it until the desired viscosity and suspension of gold leaf are achieved.