A course of 6 is recommended to begin with every 3 weeks. A further course will be needed if the Rosacea is moderate or severe. Maintenance sessions are recommended to stay on top of the production of new vessels by the body. As Rosacea is chronic it may well return. It is very client dependent, many benefit from a top up course once per year.To prolong results avoid sun on your face permanently and wear a physical sun cream such as Obaji matte.