Not really—there isn’t a ton of evidence that shows whether eyelash extensions actually affect your natural lash length or health long-term. There is, however, a teeny-tiny risk of developing traction alopecia, says Zaina Al-Mohtaseb, MD, assistant professor of ophthalmology at Baylor College of Medicine in Houston, which is where your natural lashes can fall out as a result of the constant weight of repeated eyelash extensions. But don’t stress—this isn’t common

“Usually, it takes years of bad application and improper care for long-term lash damage to happen as a result,” says Marin. So please, only go to legit, well-reviewed salons (no matter how good that Groupon deal is). Make sure your technician follows all the sanitation and disinfection protocols, and don’t feel awkward asking your technician to confirm that all of these precautions are being taken. And remember: Listen to your gut. If you’re getting a bad vibe from a salon, reschedule