Transmission of disease Any sexual activity that involves contact with the
bodily fluids of another person contains the risk of transmission of
sexually transmitted diseases. Semen is in itself generally harmless on the skin or if swallowed. However, semen can be the vehicle for many sexually transmitted infections, such as
HIV and
hepatitis. The
California Occupational Safety and Health Administration categorizes semen as "other potentially infectious material" or OPIM. Aside from other sexual activity that may have occurred prior to performing a facial, the risks incurred by the giving and receiving partner are drastically different. For the ejaculating partner, there is almost no risk of contracting an STD. For the receiving partner, the risk is higher. Since potentially infected semen could come into contact with broken skin or sensitive
mucous membranes (e.g., eyes, lips, mouth), there is a risk of contracting an infectious disease.
Allergic reactions In rare cases, people have been known to experience
allergic reactions to seminal fluids, known as human seminal plasma
hypersensitivity. Symptoms can be either localized or systemic, and may include itching, redness, swelling, or blisters within 30 minutes of contact. They may also include
hives and even difficulty breathing. Options for prevention of semen allergy include avoiding exposure to seminal fluid by use of condoms and attempting
desensitization. Treatment options include
diphenhydramine and/or an injection of
epinephrine. ==Criticisms and responses==