For hygienic hand washing, the product is used pure at the rate of 4 ml poured onto previously wet hands, rub for 1 min and rinse carefully with water. For surgical hand washing, repeat this protocol for 3 to 5 min, on the hands and forearms. To cleanse soiled wounds, use the product diluted to one third then rinse carefully with water. For the preoperative preparation, it must be carried out less than 2 hours before the intervention. A shower must also be practiced the morning of the intervention with the pure product. Cutaneous route only.