Temperature does not just affect how a fragrance feels. It changes the speed of the Three Acts, the intensity of each phase, and how long the formula lasts on skin.

ACT 01 — HEAT | 0–30 MIN (SUMMER)  —  Elevated skin temperature in warm weather accelerates evaporation across all volatility tiers. Act 1 in summer: shorter, more intense, more immediate projection. Top notes depart faster. The transition into Act 2 is compressed. Fragrances can smell louder in heat — a formula designed for moderate projection in a London autumn can become overwhelming on a warm day.

ACT 01 — COLD | 0–90 MIN (WINTER)  —  Lower skin temperature in cold weather slows evaporation. Act 1 in winter: longer, quieter, closer to skin. Top notes persist longer but project less. The formula stays closer to the body — sillage is reduced. This is not a performance failure. It is physics.

ACT 02–03 — SEASONAL | VARIABLE  —  In cold weather, Act 2 and Act 3 develop more slowly and project more softly — but last longer. A formula that lasts 6 hours in summer may last 8 to 10 in winter. Heavy base note materials (resins, musks, ambers) perform particularly well in cold: their low volatility means they were already close to skin, and reduced ambient temperature slows their departure further.

WHAT TO DO INSTEAD

In summer: apply 1 spray less than you would in winter. Target less-heated skin areas (inner elbow, behind the knee, chest) rather than wrists exposed to direct sun. Choose lighter concentration or lighter formula profiles. In winter: apply to covered pulse points (inside collar, inner wrists under cuffs) where body heat is trapped and assists slow-release projection. Heavy base-forward formulas genuinely perform better in cold. Seasonal rotation is not a preference. It is a performance decision.