This kajal has absolutely no side effects. When I tried it first, I felt no irritation, no harshness at all. It is so smooth and easy to apply. The colour is also jet black which beautifies eyes amazingly. I even applied it onto my daughter’s eyes as it is not harmful for children too. It can be removed easily without stretching the delicate skin under eyes. Its herbal, therfore I have no fear of harmful chemicals that can destroy even our eye sight. Its cost is also affordable. It lasts long. I like it.