Yes, many U.S. manufacturers offer semi-custom programs where you can swap or add peptide actives to a stock oil base, typically at MOQs of 250–1,000 units. Full bespoke formula development — where a cosmetic chemist designs the formula from scratch — usually requires 1,000+ units and adds 8–12 weeks for stability testing. AJ Cosmo Labs lists both stock-plus and fully custom manufacturers so you can match by budget and timeline.
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