Facial hair is incredibly stubborn. I’ve had three sessions so far and a lot has disappeared. But there’s still a lot visible as well but quite patchy. Upper lip and chin are the worst. Like you, I have dark hair and a (very) pale skin.
I do take some solace is seeing less and less hair in my shaver as weeks go by. It is working, but slowly.

The lady at the clinic was honest upfront that she didn’t have a lot of experience with a full removal of facial hair. Most customers for facial hair removal are men who want their beards trimmed.