Razor burn
From Voyeurweb's Wiki about Sex
Razor burn is an irritation of the skin caused by shaving pussy hair with a razor; either at sensitive areas or not using proper technique. It appears as a mild rash and usually disappears after a few hours to a few days, depending on severity. In severe cases, razor burn can also be accompanied by razor bumps, where the area around shaved hairs get raised red welts or infected pustules.