The WHO and UNICEF-led Hand Hygiene for All Initiative aims at ensuring implementation for WHO's global recommendations on hand hygiene to prevent and control COVID-19 pandemic, and hand hygiene improvement sustainability in countries as a mainstay of wider infection prevention and control (IPC) and water, sanitation and hygiene (WASH) efforts. But how can hand hygiene implementation be successful? By implementing strategies and approaches proven through the successes of the WHO Save Lives: Clean Your Hands campaign and fostering integration between hand hygiene and WASH improvements. This brief draws on learning from legacy work and the current evidence based and summarizes how joint action and collaboration are essential for successful strategies, in the context of the COVID-19 response and beyond