Eyelash Extension Chart: Curl, Diameter & Lengths Explained

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Creating flawless lash sets starts with understanding the fundamentals. Curl, diameter (thickness), and length are the three structural elements behind every successful lash application – from soft, natural classics to bold mega volume looks.

This guide is designed as a technical, evergreen reference for professional lash artists. Use it for lash mapping, client consultations, and set customisation. As a trusted supplier to the beauty industry, SalonServe supports lash professionals with high‑quality lash extensions, adhesives, removers, and tools – all designed for performance, safety, and consistency.

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What Is an Eyelash Extension Chart?

An eyelash extension chart is a visual reference that breaks down lash curls, diameters, and lengths. Lash artists rely on charts to:

• Select safe, suitable lash weights
• Customise sets for different eye shapes
• Create balanced lash maps
• Achieve consistent results across clients

Every lash set – classic, hybrid, or volume – is built on these three variables. Mastering how they work together is essential for both aesthetics and natural lash health.

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Eyelash Extension Curl Chart (J, B, C, CC, D, L, M)

Lash curl determines lift, openness, and overall drama. Choosing the right curl enhances eye shape while ensuring comfort and retention.

Lash Curl Comparison Chart

Curl	Lift Level	Appearance	Best For
J Curl	Very low	Minimal curl, straight	Naturally straight lashes, ultra-natural sets
B Curl	Soft	Natural-looking	Everyday wear, subtle enhancement
C Curl	Medium	Noticeable lift	Most eye shapes, versatile styling
CC Curl	Medium-high	Glam but wearable	Clients wanting definition without extremes
D Curl	High	Big lift, round eye	Hooded or downturned eyes, dramatic looks
L Curl	Sharp base	Strong lift at root	Monolid or hooded eyes, straight natural lashes
LC Curl	Moderate	Lifted with slight angle	Adds natural lift to straight lashes, versatile for classic or hybrid sets
M Curl	Extreme	Lifted + angled	Trend-driven, bold, editorial styles

Curl Selection Tips

• Classic sets: J, B, C, or CC curls for balanced definition
• Hybrid sets: Mix C/CC or CC/D for texture
• Volume sets: C, CC, D, L, or M curls depending on eye shape

Explore professional lash trays with a full curl range in our lash extensions collection.

Explore Eyelash Treatment Supplies

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Eyelash Extension Diameter (Thickness) Chart

Diameter refers to the thickness of a single lash extension, measured in millimetres (mm). Thickness directly affects weight, retention, safety, and styling potential.

Choosing the correct diameter is critical to protect the natural lash while achieving the desired look.

Lash Diameter Comparison Chart

Diameter	Weight	Use Case	Style Type
0.03 mm	Ultra‑light	Mega volume	10–20D fans
0.05 mm	Very light	Volume	5–10D fans
0.07 mm	Light	Volume / Hybrid	2–5D fans
0.10 mm	Medium	Classic	Soft, natural classics
0.12 mm	Medium‑firm	Classic	Slightly fuller classics
0.15 mm	Full	Classic	Bold classic sets
0.20+ mm	Heavy	Specialty	Dramatic or textured classics

Diameter Safety Guidelines

• Finer diameters allow more lashes per fan without excess weight
• Thicker diameters should be used sparingly and only on strong natural lashes
• Proper diameter choice improves retention and lash health

Pair your lash selection with professional‑grade lash adhesives and removers for optimal results.

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Eyelash Extension Length Chart

Lash extension lengths typically range from 6 mm to 20 mm. Length impacts both visual effect and mechanical stress on the natural lash.

How to Choose Lash Length Safely

• Assess natural lash strength and density
• Shorter lengths offer better retention and comfort
• Longer lengths create drama but increase leverage

Recommended Lash Lengths by Style

Style	Typical Length Range	Notes
Natural	8–10 mm	Enhances without overpowering
Soft glam	10–12 mm	Balanced lift and definition
Dramatic	13–15 mm	Best for strong natural lashes
Specialty / Editorial	16–20 mm	Advanced use only

Length should always taper across lash mapping zones for a seamless finish.

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How to Choose the Right Curl, Diameter & Length for Clients

Professional lash customisation goes beyond charts – it’s about adapting them to real clients.

Consider the following:

Natural Lash Strength

• Finer natural lashes = lighter diameters and shorter lengths
• Strong natural lashes can support bolder styles

Eye Shape

• Hooded eyes: D, L, or M curls for lift
• Downturned eyes: D or CC curls to open the eye
• Monolid eyes: L curls for visible lift

Desired Style

• Natural: J/B curls, shorter lengths, classic diameters
• Glam: C/CC/D curls with strategic length layering
• Bold: Volume fans with lightweight diameters

Lash Mapping Zones

• Inner corners: Shorter lengths, softer curls
• Centre: Maximum lift or length
• Outer corners: Taper for balance or elongation

For a step‑by‑step breakdown, see our full Salon Eyelash Extension Guide.

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Lash Mapping Examples Using Curl, Length & Diameter

1. Natural Eye

• Curl: B or C
• Diameter: 0.10–0.12 mm
• Lengths: 8–10 mm
• Result: Soft enhancement, everyday wear

2. Doll Eye

• Curl: C or CC
• Diameter: 0.07 mm (volume) or 0.10 mm (classic)
• Lengths: 9–12 mm (longest in centre)
• Result: Open, round eye appearance

3. Cat Eye

• Curl: C, CC, or D
• Diameter: 0.07 mm volume or 0.15 mm classic
• Lengths: 8–13 mm (longest at outer corner)
• Result: Elongated, lifted look

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Professional Lash Supplies You Can Trust

SalonServe supports lash artists with salon‑approved products designed for reliability and performance:

• Lash trays & extensions
• Professional lash adhesives & removers
• Lash tinting products

Whether you’re perfecting your lash mapping technique or expanding your service menu, this chart is your go‑to technical reference.

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Bookmark this guide and return to it whenever you need clarity on lash curls, diameters, and lengths – because precision is what sets professional lash artists apart.

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