The artist uses complementary colors in this image. how does it affect the art piece?

We would need to know what the image is first {Not the answer}

Complementary colors are pairs of colors which, when combined, cancel each other out. This means that when combined, they produce a grey-scale color like white or black. When placed next to each other, they create the strongest contrast for those particular two colors. Due to this striking color clash, the term opposite colors is often considered more appropriate than "complementary colors".

she has a scar on her face by her lips that kind of unique