Complex sentence: 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, as oil weakens the bond between the glue and the lash.
Split into simpler sentences: The bond is designed to last until the lashes naturally fall out. However, the extensions may fall out faster if one uses oil-based eye makeup remover or rubs eyes regularly, as oil weakens the bond between the glue and the lash.