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Technical glossary · Fibres & fans

Lash materials
explained.

Updated

In plain English

Lash material is the substance forming a fibre; terms such as silk or faux mink can describe different finishes of synthetic products.

Also seen as: PBT lashes · Faux mink lashes · Silk lashes · Cashmere lashes · Synthetic lashes

What the term means.

PBT means polybutylene terephthalate, a synthetic polymer used in professional extension ranges. The same broad material can be formed with different surface finishes, tapers and cross-sections, changing how a fibre feels and looks.

Silk, mink and cashmere labels alone do not prove composition. Check whether a name describes a synthetic finish or a material claim. Technical comparison still needs diameter, length and shape rather than using the material label as a proxy for weight.

The technical details.

PBT
Polybutylene terephthalate
Finish variables
Gloss, matte appearance, taper and cross-section
Naming limit
Silk and mink are not universal material specifications
Product check
Actual composition and construction

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

A common question.

Does synthetic mean every fibre weighs the same?

No. Thickness, length, taper and cross-section affect construction. A shared material name does not establish equal mass or suitability.

Put the meaning into context

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