Self-cleaning surfaces are materials designed to repel dirt, stains, and other contaminants, making them easier to maintain. These surfaces often use special coatings that utilize properties like hydrophobicity, which causes water to bead up and roll off, carrying dirt with it. This technology is commonly found in products like self-cleaning glass and self-cleaning textiles. The concept of self-cleaning surfaces is inspired by nature, particularly the lotus leaf, which has a unique structure that allows it to stay clean despite being in muddy environments. By mimicking these natural properties, scientists and engineers create surfaces that require less frequent cleaning, saving time and resources while promoting hygiene.