I have a fissure in my anus that is painful when I have a bowel movement, what should I use?

In such a situation, it is best to use a product containing witch hazel after each bowel movement and after showering for a week. Make sure to also avoid becoming constipated, as this can delay healing. If you are constipated, you can use a product like Lax-A-Day™ once a day for a week as well.