Yes. Stability testing is non-negotiable for peptide formulations because peptides can degrade under heat, UV, or incompatible pH. Accelerated stability testing (45°C, 75% RH for 8–12 weeks) and freeze-thaw cycling are standard. In the EU, a full Cosmetic Product Safety Report is legally required. AJ Cosmo Labs connects you with labs that include stability data as part of their development package.
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