How often do I trim hair extensions? By Hair Extension AngelsOctober 26, 20160 Back to Home Hair extensions have to be cut like natural live hair. Hair Extension Angels recommend cutting them once every few month, if heated styling Irons are used frequently. Hair Extension Angels provide a lovely hair extension trimming service, that will keep your extensions looking fresh. Just bring your clip ins or any type of extensions and we will trim them for you. We will ease you of all the work and help you to keep your style fresh and looked after. Back to Home