What testing is legally required before selling a cosmetic in the US or EU?

In the US under MoCRA, you need stability data, preservative efficacy (challenge) testing, and adverse-event reporting systems. In the EU, a full Cosmetic Product Safety Report (CPSR) signed by a qualified safety assessor is mandatory before CPNP notification. Both markets require accurate INCI labeling. A regulatory consultant found through AJ Cosmo Labs can audit your dossier before submission.