When you apply eyeliner, kajal or any eye product in your waterline, it changes the overall eye makeup look. No matter whether you want to achieve smokey eyes, red eyes or want your small eyes to look bigger, your look will change with waterline. The waterline is the part on which your eyelid touches when you close your eyes. Both upper and lower water lines consist of lashes. In makeup, water lines are used to colour using kajal or liner to make lashes look bigger. It improves overall eye appearance.

Be careful before using any product directly on your waterline as they can cause irritation, itching, redness, inflammation and other problems. Consult a doctor immediately if you are facing any irritation due to some product because eyes are very sensitive.