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How to Choose Lashes for Extensions: Length, Thickness & Curl Explained

How to Choose Lashes for Extensions: Length, Thickness & Curl Explained

08 - 09 - 2025

Choosing the right length, curl, and thickness of false lashes is absolutely crucial to achieve the desired lash extension effect. Poorly selected lash length, thickness or curl can ruin the entire styling, even with perfect technique.
Read on and find out how to achieve your intended lash extension results!

How to choose the right lash length?

Lash length will vary depending on the styling. However, the most important thing is to match the length of false lashes to the condition and length of the natural lash.

 

Why is the correct lash length so important?

If the applied lash is too long, it may start to bend unattractively and droop, ruining the final look. It can also affect wearing comfort.

 

How to match length to natural lashes?

Remember, even in the most natural styling, your Lash Map should include several lash lengths.
Keep these tips in mind to better match lash lengths:

  • Use shorter lashes in the inner corner for a natural look and increased comfort.
  • For a soft effect, choose lashes about 30% longer than the natural ones.
  • For more dramatic stylings like the Medusa Set or Doll Eye, use lashes about 50% longer.
  • Eye placement – if the eyes are protruding, opt for shorter lashes; if they are deep-set, longer lashes will work better.

See how to create a spectacular Medusa Set → Medusa Set – What is the latest trend?

 

How to create Kim Kardashian style lashes?

In some stylings, especially more dramatic ones like the Kim K effect, combining different lash lengths is key and the differences in length are clearly visible. The lash lengths in this style can vary by as much as 5–8 mm!

 

Choose the perfect lash thickness

The thickness of false lashes depends on the desired effect, but also on the technique used to create the styling.

 Lash styling

How to choose lash thickness for the 1:1 technique?

When applying lashes with the 1:1 method, avoid lashes that are too thick as they may weigh down the eye and affect comfort and the final result.

Keep this in mind when doing 1:1 lash extensions:

  • Thickness should be between 0.10 mm – 0.15 mm
  • The most popular choice for this technique is 0.12 mm lashes
  • Match the lash thickness to the natural lash

Volume techniques in lash extensions

Volume lashes offer many styling options and effects. However, it’s important that each lash fibre isn’t too thick.

  • Choose lashes within the range of 0.05 mm – 0.07 mm
  • The larger the volume (Mega Volume, Kim Kardashian effect), the thinner the lashes (usually 0.03 mm – 0.05 mm)

 

Types of lash curls

When looking for lash styling inspiration, you’ll often find suggestions for which curl to use. Keep in mind, though, that not every curl suits every style.

 

How to choose a lash curl for the Natural Look effect?

Natural Look lash extensions mimic natural lashes, just in a better version. That’s why the curl should be visible, but not exaggerated.

  • For a natural look, the best curls are C or D

Open-eye effect and lash curl

Stylings designed to visually open the eye, such as the Doll Eye, require stronger curls like CC or D.

 

Cat Eye and extended outer corners

In stylings with the Cat Eye, Wet Look, or Anime Lashes effect, lashes with a straight base and strong curl work best.

Curls L and M are perfect for stylings with a spiked finish.

L Lashes

Try the incredible curl of Discover L Lashes

Frequently Asked Questions (FAQ):

Who is the D curl suitable for?

The D curl is more dramatic than the C curl, still allowing for a natural look but with a more intense accent. It works best for almond-shaped eyes.

Which lashes should I choose for small eyes?

For small eyes, suggest the Doll Eye style to your client – it helps to visually open and enlarge the eye. Be sure the lashes aren't too long, as this could overwhelm the eye. Use C or D curls.

Which lashes look best on hooded eyes?

To conceal a hooded lid, go for false lashes with an L or M curl – these strongly curved lashes help lift the eyelid visually.

How to care for lash extensions to make the effect last longer?

Proper aftercare is key to maintaining your lash extension results as long as possible. Don’t get your lashes wet for the first 24/48 hours after application. Regularly and gently brush through your lashes and clean them using a specialist lash shampoo.

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