1. Raw Material Preparation
Perfumery begins with building blocks: naturals (essential oils, absolutes, resins) and synthetic aroma chemicals. Naturals are obtained by steam distillation, expression, solvent or CO₂ extraction; synthetics are produced via chemical synthesis or biotechnology for consistency and sustainability (Sell, 2014).
Incoming materials undergo quality control—gas chromatography/mass spectrometry (GC/MS) verifies purity and allergen content, and sensory panels check batch-to-batch character (Pybus & Sell, 1999).
2. Creative Brief and Formulation
Brands provide perfumers with a creative brief outlining target consumer, budget, and regulatory constraints. Perfumers construct a formula—often 50–150 ingredients—balancing top, heart, and base notes while meeting cost-per-kilogram targets (Butler, 2000).
Formulas are expressed in parts or percentages and weighed on analytical scales to 0.01 g accuracy. Modifications continue until smelling panels approve the submission.
3. Pilot Blending and Maceration
Laboratory technicians blend the concentrate (pure aromatic mixture) before diluting it with ethanol, water, and stabilisers. The bulk mixture macerates for two to eight weeks in stainless-steel tanks at controlled temperatures (~15 °C), allowing ingredients to integrate and any insoluble particles to precipitate (Pybus & Sell, 1999).
4. Filtration and Polishing
After maceration, the perfume is chilled and filtered through plate or cartridge systems to remove waxes or sediments. This “polishing” step results in a clear liquid ready for filling (Butler, 2000).
5. Stability and Compliance Testing
Cosmetic regulations require stability studies—accelerated cycles at elevated temperatures, light exposure, and freeze/thaw conditions—to ensure color, scent, and packaging remain stable (CTFA/Cosmetics Europe, 2020). IFRA standards confirm the formula meets safety limits for restricted materials like furocoumarins or allergens (IFRA, 2023).
6. Filling and Quality Assurance
Approved perfume is pumped into glass bottles using automated filling lines. Inline sensors monitor fill level, crimping, and leakage. Final products undergo random sampling for sensory checks, GC/MS verification, and packaging inspection before shipment.