HIGHLY EFFECTIVE PURIFYING SKIN SPRAY. HYPO21 is the UK’s only medically registered hypochlorous solution, designed for safe, effective skin and mucosal care. It is highly purified, non-cytotoxic, and supports cutaneous homeostasis by repairing the skin barrier, reducing microbial load, and promoting healing. Clinically validated, it is trusted for dermatological, aesthetic, and pharmaceutical use.