Amphiphilic compounds are molecules that have both hydrophilic (water-attracting) and hydrophobic (water-repelling) parts. This unique structure allows them to interact with both water and oils, making them essential in various applications, such as detergents, emulsifiers, and surfactants. These compounds can form structures like micelles and liposomes, which are important in biological systems and drug delivery. The hydrophilic part typically consists of polar groups, while the hydrophobic part is usually a long hydrocarbon chain. This dual nature enables amphiphilic compounds to stabilize mixtures of oil and water.