Citronellal is a natural organic compound primarily found in the essential oils of citronella and lemon grass. It has a fresh, lemon-like scent and is commonly used in perfumes, cosmetics, and household products for its fragrance. In addition to its aromatic properties, citronellal possesses insect-repelling qualities, making it a popular ingredient in mosquito repellents. It is also studied for potential therapeutic benefits, including anti-inflammatory and antimicrobial effects, contributing to its use in various health and wellness applications.