Memory Dust is a magical powder used by Whitelighters to erase the memories of others. It is commonly used to make mortals forget magic when it has been exposed. It can also be used on witches and other magical beings if needed. The powder is activated by blowing it from one's palm and making the target inhale the powder.
- Sam Wilder used it to make the Charmed Ones forget about the Water Demon that killed their mother for their own safety.
- When taking on Whitelighter duties, Paige Matthews gained access to the powder and used it to make her charges forget it when they were attacked.
- Mikelle used this powder to make the mortal Zach forget he was nearly killed by his friend Craig, who was a Wendigo.