We recommend you allow an adaptation period of 3 weeks, during which you should shave regularly (at least 4 times per week) to allow your hair and skin to adapt to the new shaver. If you experience heavy irritation, please stop shaving to allow your skin to heal. During this period, use your new electric shaver exclusively and do not alternate shaving methods; alternating shaving methods makes it more difficult to adapt to the new shaving system. Your first shaves may not give you the result you expect and your skin may even become slightly irritated. This is not uncommon since your skin and beard need time to adapt to any new shaving system.