Essential oils are volatile essences extracted from aromatic plants. Among all the species found in the plant kingdom, only 4,000 contain aromatic essences. However, only a few hundred contain enough for us to extract essential oils with a significant yield. Essential oils are complex mixtures combining different compounds (terpenes, alcohols, ketones, aldehydes) that provide numerous benefits, whether ingested, inhaled or applied topically. Let's explore together the different methods of extracting essential oils.