Witch Hazel works great for soothing and preventing anal fissures as well as hemmoroids. I currently suffer from IBS so my bowel movement tend to be irregular, making it uncomfortable to go. Clean then wipe with a damp cotton ball (not soaked) after a each bowel movement until symptoms go away.
For hemmoroids dampen half a cotton ball and insert partially in the rectum (like a soppository) for a few hours or as long as needed. Caution! Can sometimes burn or sting a little But usually goes away.
I suffered from anal fissures for years and discovered an amazing way to eliminate them. By applying witch hazel with a Qtip after bowels or before bowels will greatly reduce any pain or discomfort from the fissures. Witch hazel is a cleansing astingent that does not cause over drying. Try it, it works for me, and I will never stop using it!