MATERIAL MODULES: CITRUS & ALDEHYDES

Citrus and aldehydic notes have shaped the olfactory world for centuries, conjuring feelings of freshness, brightness, and effervescence in scents across cultures. Citrus notes, with their immediate impact and volatile nature, have historically represented cleanliness and vitality—qualities that remain in high demand in today's fast-paced, image-conscious society. Aldehydes, by contrast, evoke a more abstract freshness: synthetic, sparkling, and often otherworldly. From early 20th-century icons like Chanel No. 5 to contemporary minimalist compositions, these materials challenge our perceptions of “natural” vs. “crafted” beauty. In a world increasingly focused on authenticity, the enduring presence of these notes in perfumery raises compelling questions about the relationship between scent and identity.

In this class, we will explore the unique characteristics and olfactory profiles of citrus and aldehyde notes, diving into their roles in the architecture of fragrance, especially as top notes. We’ll study key ingredients, from bergamot and grapefruit to aliphatic aldehydes, and assess their chemical structures, historical significance, and emotional resonance. By examining iconic formulas and creating our own scent accords, students will learn how these two families of materials can work in harmony or contrast to shape a perfume's personality.