Laser hair went wrong

Hi there!
I got 3 lasers sessions of hair removal at 10J and at 10hz and now I got my 4th session done at different place with settings 10J and at 5hz and to my surprise hairs on my lower right arm fully returned with same thickness which I had before the laser…is it treatable?

Not at that setting.

If I get back to that place where I was getting treated at 10J 10hz then will it be good as it is the Highest setting at any diode laser

If u understand my blog content, it’s taking only 1 session to see significant change/result