Water the plant lightly, giving it just enough water to leave the soil slightly damp.
Mist the plant with water several times throughout the day.
Water the plant again the next day, making sure the soil is moist but not soggy.
Water the plant again after three days. If the plant isn't reviving, the problem may be root rot rather than lack of water.
Run a knife around the inside of the pot and carefully remove the aloe vera plant. Brush away as much potting soil as possible without damaging the roots.
Cut away any brown, slimy portions of the root. Make the cuts in the white, fleshy portion of the root to make sure you have removed all of the rot. If more than half of the roots are rotted, the plant probably can't be saved.
Scrape away any blackened parts of the leaves near the soil line with a serrated knife.
Repot the plant using fresh potting soil. Don't water the plant until the scraped portion of the leaves callus over.