It depends on the product you are using and its ingredients. People use kajal or other eyeliner on their waterline to make them look bigger and more attractive. But using any harmful product on your waterline can harm your eyes.

So, before using any of the products directly on your eyes, read its ingredient list. If it consists of harmful chemicals, avoid that and choose some chemical-free product. Taking advice from a professional can be a good choice as eyes are sensitive. They give brief suggestions about what to use and what not.

Also, avoid some water-based eyeliner on your waterline as they go inside your eyes and cause issues like redness, itching and inflammation. Bring a waterproof eye pencil that is manufactured especially for waterline and labelled with “waterline-safe” and “dermatologically tested”. Use it on your lower lash line to give a more matte and bigger eye look.