So if you feel like your hair feels greasy, even with frequent washing, it might be time to scale back your scheduled hair wash days. While frequency depends on many factors, she says most people do well washing their hair two to three times per week, based on her expertise. However, scalp type, lifestyle, and product usage can play a huge role in how often people should wash their hair. In terms of scalp type, “An oilier scalp will need more frequent cleansing, while a drier scalp benefits from less,” notes D’Alessandro. Similarly, “Hair texture is also relevant, as finer hair tends to show oil more quickly, while coarser or curlier textures can go longer between washes.”