Pick one setting and use it everywhere before touching anything else, working against the growth first and then lightly across it.
Unevenness usually comes from correcting one side and then the other, then the first again. Each pass is one click — half a millimeter on the Braun BT5525, a quarter on the BT9545 — and three of them in one place is the step you then chase across the whole beard.
The routine that avoids it: comb the beard down so you can see its shape, set one length, and cover the whole beard in that setting. Only then decide whether anything needs changing.
Direction matters as it does on a head. Against the growth cuts evenly; with the growth lays hairs flat so they escape and stand up afterwards. A light pass across the grain at the end catches what lay down.
If your trimmer has a locking wheel, use it. On a wheel with forty settings half a millimeter apart, a knock of two clicks mid-pass is invisible until the two sides are compared — what the lock is for.
If it has already gone wrong
The fix depends on which fault it is, and they are not the same. One spot shorter than the rest is a patchy trim, and the answer is to take the beard down to the patch rather than blend around it. Two sides that do not match, on a setting you never changed, is the wheel moving. Starting over at one setting fixes the first and not the second.
Last reviewed August 22, 2026