A spherical conglomeration of surface active molecules formed in solution. The polar groups on the molecules align toward the water phase and the nonpolar groups tend to point toward the oil or nonpolar phase. This phenomenon allows groups of molecules to form spherical cells. Micelle formation is the basis for most emulsification. Liposomes are a form of micelles.

The diameter of a Micelle particle ranges from 5 to 100 nm.

The size and shape of micelles can vary depending on the type of surfactant and the conditions in the solution.
Micelles can be either spherical or rod-shaped.
Micelles can be used to solubilize a variety of different substances, including oils, fats, and drugs.
Micelles can also be used to stabilize emulsions and foams.

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