Heavy duty and longlasting concealer recommendations please!

[gaylec1xa]

Just that really :)
Happy to spend a bit more as I need it for a couple of special occasions which are coming up soon.
No matter what I've tried already, I still have dark circles under my eyes :(
I used to get Vichy concealer from Boots but I think it's been discontinued as can't find it any any branches these days. Sigh.
Any great alternatives that anybody could recommend please?

I use boots no 7 hydra luminous. It's serviceable.

Are you using primer? . Setting spray on top?

Thanks.
Never used primer but I have tried setting spray. It doesn't seem to make much of a difference tbh. Any particular brands you could recommend?

I've found this really good - IT Cosmetics Bye Bye Undereye. You only need a tiny bit and it doesn't budge.

 https://www.johnlewis.com/it-cosmetics-bye-bye-under-eye-concealer/light-nude/p5326041?tmad=c&tmcampid=7&sshare=jlappioss_Y29tLmFwcGxlLlVJS2l0LmFjdGl2aXR5LkNvcHlUb1Bhc3RlYm9hcmQ=