Glycerin protects the skin and creates a protective barrier over hemorrhoids, allowing them to heal. Glycerin also prevents drying of these tissues and reduces itching.
Witch hazel is an astringent. It shrinks swollen tissue and provide relief from itching and irritation.
The combination of glycerin and witch hazel topical (for the skin) is used to relieve rectal pain, pressure, irritation, and mild bleeding caused by hemorrhoids. This medicine will not treat or cure a hemorrhoid, it will only relieve the symptoms.