8 Best Beard Trimmers (2025): Full Beard, Hair, Stubble

Beard grows about 1 millimeter every 2-3 days, on average, one eighth inch per week, depending on who you are. Therefore, testing a whisker trimmer can take some time.

Generally, test each whisker trimmer once the whisker grows well to use at least two cutting lengths. Weight and balance are important, as is the blade’s ability to reach troublesome areas around the neck. We check the ability of the trimmer to act as a shaver, whether bald or neck.

Our testers will see how well-made and easy to use the attachments are, and check the manufacturer’s claims regarding battery life and power. We also check in with professional hair cutters, especially to verify durability and reliability claims between brands and models.

Tester Matthew Korfhage has rough, angry hair, making him look like his own heart. Tester Andrew Williams has a relatively complete whisker with a straight-grown stubble. The reviews tried to reflect issues that could, for example, be closured with thick hair. And we might run the blades on a horse hair broom to test the power of the motor. It can also sway when faced with a thick, full whisker.