The lifespan of hair extensions can range anywhere between 3 to 6 months to a year or longer, depending on the general care they receive, the quality of the products you use, and how often they are worn. Remember, the more you wash and heat style your extensions, the shorter their lifespan will be, so try to keep washing and product use on your extensions to a minimum. The important thing to remember is that your hair extensions don’t have a natural hydration source like your own hair does, so keeping them moisturized and reducing dryness is crucial to prolonging their lifespan.