Concentration sets longevity and price. Eau de cologne is 2 to 5% fragrance oil, eau de toilette 5 to 15%, eau de parfum 15 to 20%, and extrait or parfum 20 to 30%. Higher concentration means longer wear and higher cost. State your target concentration in your brief so perfumers quote accurately. You can specify this when you post a brief in the AJ Cosmo Labs app.
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