A combination of heat and cold! Use one of those bug pens (or a cotton ball dipped into very hot - about 70°C - water) and press it against the bite for about 10-15 seconds. Repeat if necessary.
Afterwards, use ice, frozen peas, a cool pack, or a cloth saturated with a mixture of vinegar and cold water, and apply it to the bite.
The only problem with them is that ever since I updated to Windows 11, my laptop no longer connects to any Bluetooth devices and absolutely nothing will fix this issue.
But that's hardly the headphones fault, it's this shitty operating system.