Which Lash Curl for Which Eye? Shape, Type and Growth Direction

You're in consultation. The client's in the chair. You're not thinking "what does a CC curl do?" — you're thinking "what does this eye need?"

So here's the curl range organised the way you actually use it: by the client in front of you.

Five Things to Read, Not One

Most curl guides stop at "eye shape," which is why their advice so often doesn't land. Eye shape is one factor out of five, and it isn't even the most decisive.

1. The shape — round, almond or narrow. The outline of the eye itself.
2. The depth — protruding, normal set or deep set. How far the eye sits forward in the socket.
3. The lid — normal or hooded. (An open lid behaves like a normal one, so there's nothing extra to do there.)
4. The brow position — low, normal or high set. The factor almost nobody accounts for, and the one that can undo an otherwise correct choice.
5. The lash growth direction — upward, straight out or downward.

That last one changes everything, because a curl produces its effect relative to the lash it sits on. CC on downward-growing lashes reads like a C. D on those same lashes reads like a CC. Apply CC to a client whose lashes already grow upward and you'll land close to a D whether you intended one or not.

Read all five and the curl usually picks itself.

One thing that isn't a curl question

The outer corner — level, upturned or downturned — is a styling decision, not a curl one. You address it through mapping and length, not by changing curl. Worth knowing where the line falls, because trying to solve an outer corner with curl selection is a common way to end up with the wrong curl everywhere else.

1. By Eye Shape

The outline of the eye: round, almond or narrow.

Almond eyes

The most accommodating shape — almost everything works, so choose on the effect you want.

Works well: B (softest) · C (soft natural lift) · CC (eye-opening) · D (maximum lift) · L (outer corner extension) · L+ · M (lift with elongation)

Almond eyes give you the full palette. Let the growth direction and the client's taste decide.

Round eyes

Works well: B · C · CC · L · L+ · M

Think carefully about: D. Round eyes with a very round curl can read as more round still. If you want serious lift here, M is the better instinct — it gives you the lift with some edge to it, rather than doubling down on roundness.

Narrow eyes

The brief is almost always "open them up," and that rules out the softer curls.

Works well: CC · D · L+ · M — M opens narrow eyes well, provided the natural lashes grow straight or slightly upward

Avoid: B, which won't do enough for a narrow eye — it simply doesn't lift them · C, for the same reason · L, which extends rather than opens

2. By Eye Depth

How far forward the eye sits in the socket. This layers on top of shape — a deep set eye can be round, almond or narrow — and it often matters more to your curl choice than the shape does.

Normal set eyes

Works well: everything — B, C, CC, D, L, L+ and M all suit. Choose on shape, effect and growth direction.

Deep set eyes — the one with its own logic

This is where the usual instinct goes wrong, so it's worth understanding properly.

With deep set eyes, you don't want lift — you want to bring the eye out of the socket. Those are two different jobs, and the curls that do them are different curls.

Works well: B · C · L+ · L · CC sometimes — these bring the lash forward rather than driving it upward

Check carefully before using: D and M. Both are strongly lifting curls, and on a genuinely deep set eye a strong lift can send the extension up into the brow bone. Occasionally they work — but assess the socket depth first, and if in doubt use a curl that projects rather than lifts.

That brow bone risk is the single most useful thing to know about deep set eyes, and almost nobody mentions it.

Protruding eyes

The shape that most rewards getting the curl right, because the wrong one exaggerates the projection.

Works well: C · CC · L

Avoid: D, which emphasises the projection · M, which makes protruding eyes appear larger still

Important caveat on CC here: check the growth direction carefully first. If the natural lashes already grow upward, CC will read closer to a D — which is exactly what you were trying to avoid on this eye shape.

3. By Eyelid

A normal lid places no constraint on curl choice — read the other four factors and choose freely. An open lid behaves the same way. That leaves one case that genuinely changes your decision.

Hooded eyes

The clearest example of why lid and shape are different questions. Hooding is a lid condition — excess skin, a droopy lid — and it can sit on an almond, round or narrow eye alike.

So there isn't a "hooded eye curl." There's a job to do: create enough lift that the lash line clears the hood and stays visible when the eye is open. How much lift that takes depends on two things.

1. Where the hood actually sits. A lid that's hooded all the way across needs considerably more lift than one that's only hooded at the outer corner. For outer-corner hooding, you need less than you'd think — even an L curl with its slight lift can cover it, though it wouldn't be the curl you'd reach for first.
2. Which way the lashes grow. On straight natural lashes, D and M both do the job well. Even a C curl can work, provided the client doesn't want a very high lash line.

That last point matters more than it sounds. Some clients with hooded lids want maximum lift; others want the hood covered without a dramatic lash line. Both are valid briefs, and they call for different curls on identical eyes.

The approach: look at where the hood falls, check the growth direction, ask how high a lash line she actually wants — then pick the curl that gets the lash line above the hood and no further.

4. By Brow Position

Here's the factor almost nobody accounts for, and it can quietly undo an otherwise correct curl choice.

The lash line and the brow line are read together. The space between them is what the eye reads as proportion — so where the brow sits changes how much lift the lashes should contribute.

Low-set brows → go softer. There isn't much room between lash line and brow, so a strong curl crowds the space and can look heavy. Reach for the slighter curls: B and C.

Normal brows → anything goes. No constraint from this direction. Let the other four factors and the client's brief decide.

High-set brows → go stronger. A wide gap between eye and brow reads as disproportionate, and a stronger curl fills it — bringing the lash line up to close the distance and bring the face into better balance. CC, D and M all do this job. A soft curl here isn't wrong exactly, it just leaves the gap doing all the talking.

Where this compounds: low brows and deep set eyes together is the combination to watch. Both push you toward softer curls, and a strong lift risks the extension meeting the brow bone with very little room to spare.

5. By Natural Lash Growth Direction

Upward-growing lashes

The lash is already doing half the work.

B is excellent here — because the lash already lifts, a B curl reads closer to a C, giving you a gentle lift from the softest curl in the range.

Avoid D — it turns in on itself and reads round and closed. If the client wants a D-curl look, give her CC: it'll land where you wanted without the over-curl.

Straight-growing lashes

The most predictable. Curls behave roughly as the chart suggests: C reads as C, CC as CC, D as D.

Works well: B · C · CC · D · L · L+ · M

B on straight lashes gives something distinctive: a very subtle, soft result that reads almost as an eyeliner effect rather than a curl.

Downward-growing lashes

The most limiting, and the one most often misjudged.

Best choice: CC — it has the strength to lift where C won't

Avoid: B (far too soft to lift a downward lash) · C (won't lift enough) · L

L+ and M both depend on degree — and for the same mechanical reason. Both have a straight base, which means they start along whatever angle the natural lash is already travelling before they lift. On a slightly downward lash, that's no problem: both will lift it. On a steeply downward lash — most often seen on monolid and narrow eye shapes — the base starts too low for the lift to recover, so the lash dips before it rises and the lash line reads as drooping.

The test for both: look at the angle the lash leaves the lid at. Gently downward, they lift it. Steeply downward, they can't — and extra length won't fix it.

Note: D works here too, landing at roughly a CC effect.

Quick Reference

	B	C	CC	D	L	L+	M
SHAPE
Almond	✅	✅	✅	✅	✅	✅	✅
Round	✅	✅	✅	❌	✅	✅	✅
Narrow	❌	❌	✅	✅	❌	✅	✅
DEPTH
Normal set	✅	✅	✅	✅	✅	✅	✅
Deep set	✅	✅	⚠️‡	⚠️‡	✅	✅	⚠️‡
Protruding	✅	✅	✅*	❌	✅	✅	❌
BROW POSITION
Low set	✅	✅	✅	❌	✅	✅	❌
Normal	✅	✅	✅	✅	✅	✅	✅
High set	⚠️§	⚠️§	✅	✅	✅	✅	✅
LASH GROWTH
Grows upward	✅	✅	✅	❌	✅	✅	✅
Grows downward	❌	❌	✅	✅	❌	⚠️†	⚠️†

* Check growth direction first — on upward-growing lashes CC reads closer to D.
† L+ and M both depend on degree: a slight downward angle is fine, a steep one isn't.
‡ Check socket depth — a strong lift can send the extension into the brow bone.
§ Not unsuitable, just won't achieve the aim — a soft curl leaves the eye-to-brow gap unaddressed.

Hooded lids aren't in the grid because the answer depends on where the hood falls — see the section above. The outer corner isn't here either: that's a styling decision, not a curl one.

Two Curls Worth Knowing Better

L+ is the curl almost nobody reaches for, and it deserves far better. It has a straight base that lifts like a C or CC, so it suits the same clients those two do — but the flat base places beautifully. It's having a real moment in Arabian-style sets. If you've never used it, it's the one to try next.

M is a personal favourite, and it has a use worth stealing: it's superb on rounder, fuller faces. When you want serious lift and your instinct says D, stop — D's roundness makes a round face read rounder. M gives you the lift with edge, and the whole face reads better for it.

A Note on Placement

B, C and CC are straightforward under the tweezer.

D needs precision for a reason worth knowing: because it's so strongly bent, it meets the natural lash across a shorter span than a gentler curl does — less bonding area, and least of all in shorter lengths. Place it carefully for maximum contact, or you'll lose retention and blame your glue.

L, L+ and M don't. Their flat bases and more unnatural bend mean pickup and placement have to be precise, or the finished lash line loses its smoothness. Worth the extra second, every time.

FAQ: Curls by Eye Shape

What's the best lash curl for almond eyes?

Almost any — almond eyes suit C, CC, D, L and M. Choose on the effect you want and the natural growth direction.

Which lash curl is best for protruding eyes?

C or CC, checking the growth direction first. Avoid D and M, which both make protruding eyes appear larger.

What curl opens narrow eyes?

CC, D, L+ or M — M works well provided the lashes grow straight or slightly upward. Avoid B and C, which won't lift enough to open a narrow eye, and L, which extends rather than opens.

Which curl is best for deep set eyes?

B, C, L+ or L, and sometimes CC. Deep set eyes need curls that bring the lash forward out of the socket rather than drive it upward — and check carefully before using D or M, because a strong lift can send the extension into the brow bone.

Which curl is best for hooded eyes?

There isn't a single answer — hooding is a lid condition rather than an eye shape. The job is enough lift to clear the hood when the eye is open, and how much that takes depends on where the hood sits and which way the lashes grow. On straight lashes, D and M both work well; C can be enough if the client doesn't want a high lash line; outer-corner hooding needs less lift than full hooding.

What lash curl for downward-growing lashes?

CC is the reliable answer, with D also working — it lands at roughly a CC effect there. Avoid C and L. L+ and M both depend on degree: fine on a slight downward angle, not on a steeply downward one, because their straight bases dip before they lift.

Does eye shape or lash growth direction matter more?

Both, and they interact. Eye shape sets the goal; growth direction decides which curl actually achieves it on that client.

Read the eye, then read the lash, then choose. The full range — B, C, CC, D, L, L+ and M — is explained in our complete lash curl guide, and available across the Smooth Collection, brown lashes and coloured lashes at I AM Lash PRO.

Arune Mooney, I AM Lash ♥️