For further information, visit www.audiciaux.fr, www.scobex-rgpd-dpo.fr and www.dpo-externe-rgpd-france.fr. In a sector where safety, quality and consumer confidence are essential, the ISO 22716 standard defines Good Manufacturing Practices (GMP) applicable to cosmetics. This practical guide provides step-by-step support to manufacturers, laboratories and subcontractors in implementing the standard and preparing for certification. From gap analysis to final audit, it offers concrete tools, procedural models and case studies to ensure regulatory compliance, enhance traceability and guarantee product safety. An essential operational manual for successful certification.