Micelles are tiny spherical structures formed when amphiphilic molecules, such as surfactants, are mixed with water. These molecules have a hydrophilic (water-attracting) head and a hydrophobic (water-repelling) tail. In an aqueous environment, the tails cluster together to avoid water, while the heads face outward, creating a stable structure that can trap oils and dirt. Micelles play a crucial role in various applications, including detergents and cosmetics. They help to solubilize non-polar substances, allowing them to mix with water. This property makes micelles essential for cleaning products, as they can effectively remove grease and stains from surfaces.