It is important to use a condom for oral sex performed on a male and for anal sex, and to use a dental dam when performing oral-anal stimulation or oral sex on a
female. Remember, some STIs (like HPV) can be spread via parts of the skin not covered by a condom, so it’s important to know you and your partner’s status before engaging in sexual activity.
Can’t find a dental dam in a store? You can easily make one out of a condom: https://factnotfiction.com/post/66036025772/dental-dams-are-small-thin-square-pieces-of