Do I have to wear foundation when wearing a "bold" lipstick (or any lipstick in general)?

I read and often heard that you should be wearing a foundation, is it a must? The only makeup I like to use is an eyeliner, mascara and lipsticks. I don't like the foundation, concealer, highlighter stuff..

Guys, does it look bad when you see a woman with natural skin, no foundation but with eye makeup and lipstick on?

Do I have to wear foundation when wearing a "bold" lipstick (or any lipstick in general)?
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