Eosin is any one of a class of rose-colored stains or dyes, and many types can be obtained commercially. Some of the more common ones are:
- Eosin
- Eosin Y (most widely used and is soluble in both alcohol and water)
- Alcoholic eosin Y
- Eosin B
- Eosin-phloxine
- Picro-eosin