Most natural haircare formulas require 8 to 16 weeks from initial brief to a stability-passed, manufacture-ready formula. That includes two to four lab iterations, a 4-week accelerated stability study at 40°C and freeze-thaw conditions, and preservative challenge testing. Founders who arrive with a detailed brief — including target hair type, ingredient restrictions, and MOQ — often compress this to 6 to 10 weeks. AJ Cosmo Labs helps you structure your brief before you even contact a chemist.
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