Hi, thanks for your query.
You seem to have post inflammatory hyper pigmentation due to inflammation of the tissues caused by plucking of hair.
The hair of your side burns are becoming darker and longer probably due to hormonal
There are professional lasers available for dark skin types like ND-YAG laser.
But get it done from well trained practitioners instead of home kit.
Get a hormonal work up done before you start laser hair reduction.
Hope this solves your query.