Not really. Many people do, but you are recommended not to. To do so could result in a build-up of wax in your ear. Not so much with earphones and headbands, but it is always good to give them and your ears a rest now and again. Give your ear-plugs a regular good clean. Headphones do not need this – they do not enter your ear. A pair of each, ear-plugs and earphones or headband, will enable you to alternate their use.