When applying foundation (makeup), do you also apply it on your neck?

PonyCar
Foundation is generally marketed as face makeup. There are however some sites that recommend applying it to your neck as well (because the face and the neck are often not the same shade, as the face gets more sun exposure).

When applying foundation, do you put some on your neck as well? For those that do- do you coat your whole neck (everything visible) or just blend it downwards from the chin?
No, just on my face
Yes, I cover my whole neck as well
Yes, I blend it downwards from my chin (but I do not cover my whole neck)
I don't use foundation, but I want to see the answers.
Select gender and age to cast your vote:
When applying foundation (makeup), do you also apply it on your neck?
59 Opinion