Birth control itself is unlikely to directly cause lash extensions to come off. However, hormonal changes that can occur as a result of starting, stopping, or changing birth control methods might indirectly impact the health of your natural lashes and, consequently, the longevity of lash extensions.
Hormonal fluctuations can affect the growth cycle of your natural lashes, potentially leading to increased shedding or changes in lash thickness. If your natural lashes are weaker or more prone to shedding due to hormonal changes, this could influence how well lash extensions adhere and how long they last.
It's important to note that individual responses to hormonal changes vary, and not everyone will experience lash extension issues related to birth control. If you notice changes in your lash health or the retention of lash extensions after starting or changing birth control methods, it could be helpful to discuss your concerns with your healthcare provider and your lash technician. They can provide personalized advice and recommendations based on your specific situation.