redness
/ˈrɛdnəs
/noun [mass noun]
The quality or state of being red or reddish: the glowing redness of the sun treatment for facial redness...
- His plain brown eyes were still tinged with sleep redness.
- Even in the dark I could see the redness on her cheeks.
- I lifted up the right side of my shirt to reveal the redness of my skin.