Factors Determining Longevity
Longevity depends on multiple interacting variables. Concentration is the primary factor: an Extrait de Parfum with 25–35% fragrance oil will typically last longer than an Eau de Toilette at 8–12%. However, concentration alone does not determine longevity, because the specific materials used and their volatility profiles matter equally. A formula heavy in base notes (musks, resins, woods, ambers) will outlast one composed primarily of citrus and green top notes regardless of concentration.
Skin chemistry is a second significant variable. Skin pH, hydration level, and warmth affect how fragrance molecules evaporate. Dry skin retains less fragrance than well-moisturized skin; oily skin can actually extend longevity by binding the fragrance material. Application to fabric and hair provides substantially longer-lasting impression than skin application alone.
Longevity Ratings and Community Standards
Online fragrance communities including Fragrantica and Basenotes use standardized informal scales for longevity: weak (under 2 hours), moderate (2–4 hours), long-lasting (4–8 hours), and very long-lasting (8 hours or more). These ratings represent crowd-sourced averages and vary widely between individuals due to skin differences.
In niche perfumery, longevity is a frequent discussion point. Certain reformulations reduce longevity due to IFRA restrictions on tenacious materials (oakmoss, nitromusks, certain musks). Perfumers compensate by increasing base note concentration, using synthetic substitutes with better tenacity, or reformulating around newer long-lasting molecules such as Ambroxan or Iso E Super.
See Also
Related entries: Sillage, Projection, Concentration, Reformulation.
Sources
- Fragrantica. Longevity rating methodology. fragrantica.com.
- Sell, C. The Chemistry of Fragrances. RSC Publishing, 2006.
- Turin, L. & Sanchez, T. Perfumes: The Guide. Profile Books, 2008.