Temporary false lashes are any lashes designed to be worn for a short period; ie, a day or less. They can be made with human hair, or with synthetic materials. The highest quality synthetic material is made with Keraspecific Fibre. This is made to feel and behave like real human hair. They are not designed to be worn when showering, sleeping or swimming. They are applied with lash glue designed specifically for temporary lashes.
Permanent lashes, also known as eyelash extensions, are lashes applied with a stronger adhesive. Generally, a single lash is applied to each natural lash; when applied properly, neither the extension lash nor the glue should touch the eyelid. The bond is designed to last until the lashes naturally fall out, though the extensions may fall out faster if one uses oil-based eye makeup remover or rubs eyes regularly.