How Long Does My Beard Hair Need to Be?

In principle, you can apply beard oil to any amount of stubble or even use it as a serum on your freshly shaven face (though we’d recommend using a good skin serum if you do).

However, for best efficacy and minimal greasiness, use it once your beard has thickened enough to cover the skin underneath—around the centimetre mark.

At this length, your beard will be thick enough that if left unruly, you may seem disheveled. It will also benefit you – researchers at the University of Queensland interviewed 919 women and discovered a clear association between fertility and facial hair.