Nanocosmetics in the field of car cosmetics refers to products that use nanoparticle-based substances. Due to their extremely small size, these particles penetrate deep into the microscopic irregularities of the paintwork and form a continuous, very thin and protective film. The result is greater hydrophobicity (water repellency), improved dirt resistance, longer lasting performance and increased gloss. Nanocosmetics are considered a modern and advanced method of car care, often following on from professional ceramic or wax applications.