Lash perfect semi permanent eyelashes enhance your natural lashes by adhering a synthetic individual eyelash to each natural eyelash using the finest medical grade adhesive the lashes are light comfortable natural and available in various curls lengths and thicknesses lash perfect individual eyelash extensions are semi permanent and can last up to 8 12 weeks depending on your natural lash growth cycle to keep your lashes at their very best we recommend infill maintenance every 2 3 week