To help get rid of hickeys quickly, you can try applying a cold compress to reduce swelling, gently massaging the area, or using a warm compress after 48 hours to increase blood flow and speed up healing. Alternatively, apply makeup or cover with clothing to hide them temporarily.
Use a red/peach color corrector with one shade light foundation
Using a concealer is the most effective way. Highly recommend buying one which matches your neck skin tone.