HIV is found in vaginal secretions and blood (including menstrual blood), it is important for persons to protect themselves during oral sex with a woman. This means never performing oral sex (cunnilingus, anilingus, "going down on") without a barrier such as a dental dam.
Dental Dams
Dental Dams are thin squares of latex usually used by dentists. From studies done on condoms, we know that latex has been proven to prevent the passage of HIV. However, dental dams may be hard to find, cost too much, and are limited by their small size. They are available through dental and medical supply stores, condom supply stores, and the University Health Center Pharmacy. The latter sells them for $.15 each. If dental dams are unavailable, non-lubricated condoms can be used in their place by unrolling and cutting along the length. This will provide a small piece of latex.
Plastic Wrap
Though there have been no actual studies done on whether plastic wrap blocks HIV, it has been proven to block the herpes virus (which is smaller than HIV). Also, staff of the FDA (Food and Drug Administration) conducted tests affirming its effectiveness as a barrier method against moisture and pressure. Plastic wrap is cheaper and more widely available than dental dams. It is also thinner, making heat and sensation stronger. Just remember, like latex, plastic wrap can rip. Also, one should use non-microwavable plastic wrap, as the microwaveable kind is porous.
How to use a Dental Dam or Plastic Wrap
(in four simple steps)
1. Put a water-based lubricant on your female partner (wherever you are going to be kissing, licking, etc.).
2. Place the lubricant on one side of the dam or wrap and place that side on your partner. Cover the labia, vaginal opening and clitoris, holding the two edges of the dam with your hands. Then, use your mouth and tongue to stimulate your partner. In oral-anal contact, use the dam to cover the partner’s anus.
3. Throw away after each use, and a new one must be used when going from vagina to anus or vice versa.
4. Never share a dam or plastic wrap with a partner.
Health & Sexuality Educator
University at Albany