Got a mole removed from my face today with laser therapy, but it just got darker than before?

I went to a skin therapy place today and got a mole on my face "removed" with one of those laser skin burning machines. It was a bit suspicious because they told me not to use duoderm or other medicines on it, and they said I can use any face washing soap I wanted. When I came home I realized that the mole still looks the same as before, even got a bit darker than before. It feels as if they just removed the skin covering the mole, not the actual mole. Is this what normally happens??