The Braun °CoolTec is a revolutionary shaver that has the power to take the heat out of shaving and put shaving irritation on ice. °CoolTec delivers a simply outstanding shaving experience for men with sensitive skin. This replacement head will keep the Braun °Cooltec razor at peak performance. Razor head life will depend on the client’s shaving habits (times used per week, regular use of the cleaning solution and beard type). The manufacturer recommends changing your razor head every 12-18 months, though many users will want to change their blade sooner.