Anyone that has made the rookie mistake of trying to shave off a beard without trimming knows how painful this can be. It leads to the question of just how long hairs need to be to require a pre-trim. The answer to this will often come down to the quality of the shaver you’re working with. A lot of these shavers can cope incredibly well with different levels of hair. The Philips Norelco S9721/89 Shaver 9700 is a great example of one that copes very well with long facial hair. Norelco shavers are generally a great option for those who often find themselves shaving longer facial hair.