How to Make Glycerin Soap Opaque

By Chelsea Hoffman

Glycerin soap base is often sold in clear blocks, even if it's a honey-glycerin base which is clear-yellow in appearance. When you want a solid, opaque bar of soap you can use glycerin soap and customize it to fit your needs. Knowing how to make glycerin soap opaque isn't difficult, and only requires a few extra ingredients. This gives you the opportunity to create attractive body cleansing products.

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Opaque soap is easier to color for decorative purposes.

Step 1

Put the glycerin melt and pour base in the glass bowl. Microwave the bowl on high for three minutes, or until the base is melted into a liquid state.

Step 2

Stir in the titanium dioxide. Titanium dioxide is a natural mineral pigment that turns beauty formulations creamy, opaque-white in appearance. Stir thoroughly.

Step 3

Add the optional colorant. You can either use a food coloring of your choice or a mica mineral pigment. Mineral mica can be purchased from craft and hobby supply stores with the rest of your soap making materials.

Step 4

Pour the melted soap into an 8 oz. soap mold or two 4 oz. soap molds. Place the mold in the freezer for 45 minutes.