Micellae
Micellae are spherical structures formed by the aggregation of amphiphilic molecules in a solution. These molecules have both hydrophilic (water-attracting) and hydrophobic (water-repelling) regions, causing them to self-assemble into micelles with the hydrophobic tails pointing inward and the hydrophilic heads pointing outward. Micellae are commonly found in detergents and soaps, where they help to solubilize and remove dirt and oil from surfaces. They are also important in biological systems, where they play a role in the transport and delivery of lipids and other hydrophobic molecules.