Do private label peptide face creams need stability testing before selling?

Yes. Both FDA (under MoCRA) and EU Cosmetics Regulation require that cosmetic products are substantiated for safety, which includes stability and microbiological challenge testing. Accelerated stability runs at 40°C for 12 weeks are the industry standard. Request full stability data — including viscosity, pH, color, and microbial counts — before approving any production batch.