Beard oil is a popular grooming product that helps keep your beard healthy and shiny. It's also a matter of preference, but we recommend leaving the oil on at least 10 minutes before washing it off.
It depends on the beard oil and your skin.
The length of time you should leave beard oil on your skin depends on the type of beard oil you’re using. If you have sensitive skin and are using a light-textured beard oil, leave it on for no more than five minutes. If your skin is dry, use a heavier-textured beard oil that absorbs quickly and leaves less residue behind.
If your face is oily or combination (oily in some areas, dry in others), consider trying an alcohol-free product that won’t clog pores but will still moisturize and condition hair follicles for healthy growth.
It's best to leave beard oil on as long as you can.
Beard oil is best left on your face for as long as possible. You can apply it in the morning, then go about your day and return to your home at nightfall. At that point, you can wash it off with a cleanser or simply wipe away any excess beard oil with a towel before going to bed.
If you're working up a sweat outdoors or have an important meeting to attend in which you don't want to look like a slobbering caveman (not that there's anything wrong with that), then by all means use more beard oil than usual—just make sure to wipe away any excess before heading out into public.
In conclusion, it is best to leave beard oil on for as long as possible. The longer it stays on your skin and in your beard, the more effective it will be at keeping it healthy and hydrated. It can take anywhere from a couple hours to overnight depending on how much time you have available during the day (or night).