Halocho #187 - The 5 prohibitions of Yom Kippour

Any work that may not be done on Shabbat may not be done on Yom Kippour. In addition there are other Mitzvos for Yom Kippour only:

1. On Yom Kippour one may not eat nor drink. If fasting will affect your health, contact a doctor and a Rabbi for instructions.
2. On Yom Kippour one may not bathe; one may not even get wet unnecessarily. Upon awakening and after relieving oneself one can wash until the knuckles. Before Birkat Cohanim, the Cohanim wash until their wrists.
3. On Yom Kippour no anointing is allowed. This includes perfumes and deodorants.
4. On Yom Kippour one may not wear leather shoes. See Halocho #133 for details. (http://halocho.blogspot.com/2008/07/halocho-133-sneakers-on-9-bav.html)
5. On Yom Kippour one may not have marital relations.

All the above are forbidden from candle-lighting on Erev Yom Kippour until after Havdala some 25 hours later.

Source: Kitzur Shulchan Aruch 133:1 Gmar Vechatima Tova; - Danny Monday, 7 Tishrei 5769

My favorite sites on Ask.com