You can use ice to get rid of hickeys fast. To use the ice to get rid of hickeys take some ice and place it in a towel and then apply the towel to the area where the hickeys are.
You may have to apply the ice for awhile throughout the day depending on how severe the hickeys are but the hickeys should be gone overnight using ice wrapped in a towel.
The ice will also help relieve the pain and reduce swelling.