DIY lash lift and lash tint kits promise salon-worthy results for a fraction of the price, making them especially tempting if you’re trying to save money or squeeze a beauty treatment into your own schedule.

But while the before-and-afters on social media can look impressive, the reality is that these treatments involve applying powerful chemicals just millimeters from your eyes—which raises an important question: Are at-home lash lifts and tints actually safe?

To find out, we asked ophthalmologist and medical director Dr. Sheri Rowen to weigh in. While she understands the appeal of waking up with darker, curled lashes, she says the risks of performing these treatments yourself often outweigh the convenience.

From chemical injuries and allergic reactions to dry eye flare-ups and lash damage, there are several reasons she recommends thinking twice before reaching for an online kit. Ahead, Dr. Rowen explains what can go wrong, who should avoid these treatments altogether, and the safer ways to achieve long, lifted-looking lashes, plus products that will help you achieve them.