Frequently Asked Questions Can I rinse my Philips hair clipper under the tap? No, you should not rinse your Philips hair clipper under the tap. Below you can find information on how to clean your hair clipper properly. How to clean your Philips hair clipper: Use the brush provided to clean the cutting element and the combs. Use a dry cloth to clean the outside of the hair clipper. Check the user manual for more detailed cleaning instructions.