Preparation H relieves the swelling, burning, itching and discomfort associated with hemorrhoids, explains its official website. The manufacturer does not recommend it for any condition other than those indicated on its label, reports 15 Minute Beauty Fanatic.
Preparation H lists phenylephrine HCl as one of its active ingredients. It is an alpha agonist, meaning it works through a receptor on a blood vessel to make it restrict. This can be an effective temporary solution, but long-term use can make the product less effective. Also, sudden stoppage can cause rebound swelling, notes 15 Minute Beauty Fanatic. Hydrocortisone is also an ingredient, and it can cause skin thinning, steroid acne and absorption that could alter your body’s cortisol responses.