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Technical glossary · Curl profiles

I curl lashes
explained.

Updated

In plain English

I curl is an almost straight extension profile with very little visible turn-up at the tip.

Illustrative profile · not to scale

What the term means.

The I label describes a fibre intended to add definition without a strongly rounded curl. It is independent of length, material or fan size, so a short and a long I-profile extension create different projections.

With very little bend, the supporting natural lash direction has a particularly direct effect on the visible outline. The technical assessment needs to consider where the tip points with the eye open, alongside its lower attachment fit.

The technical details.

Profile
Almost straight
Lower section
A nearly straight lower section
Tip and bend
Minimal upward turn
Comparison
J introduces a more visible tip bend.

These are industry definitions. Product names, profiles and availability vary; your artist selects the actual system and construction for your appointment.

A common question.

Is I curl a lower-lash extension?

I is a shape, while lower-lash describes placement. Check the specific product's intended use, length and diameter rather than treating the curl label as a placement instruction.

Put the meaning into context

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