Classic eyelash extensions involve the application of a single extension to each individual natural lash. This technique enhances the natural lashes by adding length and curl, creating a look that mimics the effect of mascara. They are ideal for clients who already have a good number of natural lashes and desire a natural, everyday look. Classic lashes are typically made from synthetic fibres like PBT (Polybutylene Terephthalate), which provide a lightweight, flexible, and durable option for lash extensions.