[Question] If you had to pick just one holy grail concealer, which one would it be?

I've been searching for the perfect concealer lately because of my blemishes, but no matter how much I apply, it either goes on too thick or cracks after a while. ㅠㅠ

• Desired type: Something that applies thinly yet has good coverage!

• Area of ​​concern: Dark circles and red acne marks

I don't mind if it's a domestic road shop product or a department store brand! Please recommend something that you consider a "real holy grail" item.