Glycerin soap

The clarity is due to the alignment of the soap molecules, which can be induced through the addition of alcohol and sugar.

[2] In modern industrial soap-making, the glycerin is usually separated from the soap to be resold and used in a wide variety of areas such as for personal care products, pharmaceuticals, chemical intermediates, and food processing.

Glycerin soap is made by melting and continuously heating soap that has been partially dissolved in a high-percentage alcohol solution until the mixture reaches a clear, jelly-like consistency.

[1] With home- and hand-made soaps that still contain glycerin left over from saponification,[2][3] the grating, melting and cooking can proceed without the addition of anything to the mixture, though sugar or more glycerin is sometimes added.

[3] Modern clear glycerin soaps bases are produced by combining various glycerol and polyols with soap and other surfactants in a manner similar to traditional glycerin soap-making methods.