While diamond and long (oblong) face shapes have distinct bone structures, they share one core styling priority: adding horizontal width and avoiding choices that over-elongate the vertical axis of the face.
- A diamond face shape has sculpted, wide cheekbones coupled with a narrower forehead and a narrower, pointed chin.
- A long (or oblong) face shape has a forehead, cheekbones, and jawline of similar width, but the vertical distance from hairline to chin is noticeably longer than one-and-a-half times the width of the face.
When you understand where your face narrows—at the temples and jaw on a diamond face, or along the entire vertical span on a long face—you can use haircut perimeter, fringe, makeup placement, and collar lines to create effortless proportion.
Before starting, remember that holding a phone camera slightly above eye level makes any face look longer and narrower. Check our guide on how to take a photo for style analysis or inspect a full visual plan in our sample styling report.
How to tell if your face is diamond vs. long (oblong)
Stand in natural daylight with your hair pulled back:
- Check your cheekbones against your forehead and jaw:
- - If your cheekbones are clearly the widest point while both your forehead/temples and your chin taper inward, you have a diamond face shape.
- - If your forehead, cheekbones, and jaw are nearly the same width from top to bottom—similar to an oval face or square face, just noticeably taller vertically—you have a long / oblong face shape.
- Notice vertical proportions: Look at the thirds of your face (forehead, nose/mid-face, and mouth-to-chin). Often only one zone—such as a higher forehead or a longer chin—accounts for the extra vertical length.
Hairstyles and bangs for diamond and long face shapes
Because both shapes already have plenty of vertical presence, avoid towering crown volume or pin-straight, unlayered hair that hangs past the chest:
For a diamond face shape (open up the temples and chin) - **Chin-grazing bobs and textured waves**: Cuts that build fullness at the chin and below the ears balance wide cheekbones. - **Tucking hair behind the ears**: Unlike other face shapes that use hair to cover the cheeks, tucking one or both sides behind your ears shows off your sculpted cheekbones while letting waves flare out around the jaw and neck. - **Side-swept bangs or curtain fringe**: Soft bangs that flare outward at the temples add helpful width to a narrower forehead.
For a long / oblong face shape (shorten vertical length and add side volume) - **Brow-skimming bangs or full curtain fringe**: Bangs are the single fastest way to visually shorten a long face because they cover vertical forehead space and shift focus horizontally to the eyes. - **Shoulder-length cuts with side fullness**: Medium-length waves, curls, or layered shags that expand outward beside the ears and cheeks add horizontal width. - **Flat crown, fuller sides**: Keep root lift modest at the top of the head and direct blow-dry volume outward at cheek level.
Before committing to a cut, read how to try a new hairstyle before you cut it and prepare your salon brief with how to explain your next haircut.
Everyday makeup placement: horizontal sweep and soft framing
In contrast to the upward diagonal placement used for a round face shape, diamond and long faces look most balanced with horizontal makeup placement:
- Horizontal blush placement: Apply blush to the apples of the cheeks and blend horizontally outward toward the ears rather than steeply up toward the temples. This visually widens the center of the face.
- Flatter, softly extended brows: A brow with a gentle, flatter horizontal line (rather than a high, peaked arch) breaks up vertical length across the upper third of the face.
- Forehead and chin bronzer touch (for long faces): A light dusting of matte bronzer along the very top of the hairline and the very bottom edge of the chin subtly shortens the vertical span.
- Temple highlighter (for diamond faces): A touch of satin highlighter at the outer temples and along the lower jaw brings light to the narrower zones of a diamond face.
Necklines, collars, and earrings that add horizontal balance
Everything below your chin either stretches your vertical line or grounds it:
- Horizontal and high necklines: Boat necks (bateau), crew necks, mock necks, turtlenecks, jewel necklines, and wide peter-pan or shirt collars break up vertical length between the chin and chest.
- Horizontal stripes, yokes, and statement collars: Trench coats with wide lapels, Breton stripes, and scarves draped around the neck add flattering horizontal volume.
- What to limit: Deep, narrow plunging V-necks and long, dangling pendant necklaces pull the eye straight down and make a long or diamond face appear narrower.
- Earring and eyewear geometry:
- - Choose clustered studs, wide circular hoops, short teardrops, or button earrings that add width right at the earlobe rather than long, thin threader earrings that hang down to the collarbones.
- - For eyewear, frames with a strong horizontal top bar or wider lenses add helpful horizontal structure—see how to build a look around your glasses.
A 10-minute home mirror test
Test this proportion shift today using clothes you already own:
- Put on a V-neck top with long, straight hair parted in the center and no jewelry near the earlobes. Take one photo in natural daylight at eye level.
- Switch to a crew-neck, boat-neck, or collared top (or drape a light scarf around your neck), sweep your bangs or front layers across your forehead, tuck one side behind your ear to show your cheekbone, and put on circular hoops or cluster studs.
- Compare the two photos to see how horizontal lines bring immediate harmony and warmth to your features.
If you want to preview two complete hair, makeup, and outfit directions tailored to your photo, visit our AI makeover guide, explore our city stylist directory, or check our one-time $19.90 styling report.