A straightforward formula — a basic lotion or cleansing oil — can reach a stable, manufacturable state in 8–12 weeks, including a 4-week accelerated stability study. Complex formulas involving actives, emulsion systems, or OTC drug-cosmetic claims (like SPF) often take 4–9 months. Timeline also depends on how quickly the brand provides feedback on prototypes. Tracking sample revisions inside the AJ Cosmo Labs iOS app helps keep projects on schedule.
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