Enhance the look of your lashes with the modelco fibre lash brush on lashes an award winning two step kit that combines a lengthening mascara with innovative brush on lash fibres working in unison to promote longer dramatic lashes the lash extension kit expertly adds 3 5mm of length to your natural lashes boosting volume and definition with a water resistant finish simply use the mascara to add length and definition then apply the lash fibres to instantly enhance lash appearance finish