The Neckline

The neckline is where your hair stops at the back and sides of the neck.

It is the last line a barber cuts and the first one anyone else notices, because it is the line that grows out first. Two weeks after a haircut, the cut itself can still be sharp while the neckline has already gone soft — which is why a man can look overdue with a fresh cut on his head.

The finish you choose says more about you than the length on top. Decide it once, with the barber, and then keep it: a neckline that changes shape every visit is the fastest way to make a good haircut look accidental.

There are two ways to finish it, and the choice is about you rather than fashion.

The neck hairline should end where the neck begins to turn — roughly a collar’s width above the base of the neck, about the height of two fingers laid flat. Cut above that and the neck reads long and the line looks high; cut below it and the back reads heavy.

There is a detail under this that separates a squared neckline from a bowl: the hairline at the back is not straight. It dips in the middle and rises at the sides. A squared line has to be laid over that dip, not under it. When it is cut under — following the dip — the corners drop and the whole back looks rounded, which is the single most common home-clipper mistake.

If you wear a beard, the neckline of the beard is a separate line, unrelated to the haircut’s. Both are visible at the same time, so they have to be planned together — see sideburns and the hot-towel shave for the join.

Two weeks for a squared finish, three to four for a natural one. The neckline almost always grows out before the haircut does: it is shorter, so the same growth moves it further, and it sits on a part of the neck that bends and shows.

This is the argument for the tidy between haircuts. It is the shortest service on the menu and the one that keeps a cut looking new — a haircut that is four weeks old with a clean neckline reads fresher than a two-week-old cut with a soft one.

Cutting it yourself is the third option and the one to avoid. A hand mirror inverts and foreshortens the back of the neck, and clippers cut flat where the hairline curves. The usual result is a line two days high and a two-week wait to look right again.

Four words do most of the work: natural, squared, leave the corners, take it to the collar. If you have been cutting it at home, say so — the barber will even the line out and tell you how long it will take to grow back into shape.

If you are between appointments, the neckline can be tidied on its own, and it is worth pairing with a beard trim or a gray blend at the hairline — the same three lines — for the cost of one short visit. The full menu and prices are here.