rehydrate
verbUK /ˌriːhaɪˈdreɪt/
US /ˌriːˈhaɪdreɪt/
To put water back into something that got dry.
After playing in the sun, I drank water to rehydrate my body.
OTHER MEANINGS
2. To add water back to dried food so it can be eaten.
You can rehydrate the dried noodles by soaking them in hot water.
3. To give someone fluids to help them feel better when they are sick or tired.
The nurse gave the runner juice to rehydrate him after the race.
4. To put moisture back into skin or hair.
This lotion helps rehydrate dry skin.