Formula development fees charged by an independent cosmetic chemist typically range from $500 to $3,000 for a custom serum, depending on complexity and number of revision rounds. Some contract manufacturers bundle formulation into their per-unit cost if you use their stock base. Stability testing, safety assessment, and packaging procurement add further cost. AJ Cosmo Labs lets you post a brief and receive itemized quotes so you can compare total project cost before committing.
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