It depends on your real natural individual lash lifestyle. If you follow the aftercare instructions and maintain the extensions at home with regular cleansers and conditioners, the minimum suggested time is 4-weeks before a redo the new full set.
The frequency of infill or re-tipping lashes to prolong the wear is completely dependent of how long you prefer to keep them on. Many people opt to wear them every 2-3 weeks, while others may choose to wear lashes as long as they possibly can.
Your lash technician will discuss this individual preference during your consultation appointment. Overall, I would recommend keeping them on as long as possible and using mascara sparingly to maximize the longevity of your set.
If your natural lash is weak or your lashes have been over processed due to over-tweezing or prolonged use of improper mascara application techniques, or you are new to lash extensions we will recommend a full set in order to avoid damage and lessen the frequency of fill ups…
There are several variables that affect how long eyelash extensions last before they need to be redone, but with proper care they can last anywhere between 2 and 6 weeks