Poikiloderma of Civatte removal!
It’s hard to remove, but you can certainly have a go at fading it. For anyone who hasn’t heard of it, Poikiloderma of Civatte is a kind of rash of pigmentation and thread veins in the neck, which crops up mainly in older, fair-skinned people (particularly in post-menopausal women) and it’s harmless but annoying. Find a great practitioner, who will supply you with prescription skincare to reduce the pigmentation, and who may also suggest treating the area with IPL or laser to zap the pigmentation and thread veins. Meanwhile, wear sunscreen religiously to stop it getting worse, and don’t spray perfume on this area (though, yes, it’s the classic place one tends to squirt it) as it will only irritate it.