Is laser hair removal permanent?
"Permanent" is one word worth reading closely in every source.
No yes or no on permanence
This page does not give a yes or no. "Permanent" is a label, and labels are where claims tend to outrun specifications. The useful move is to read how each major source words the claim and compare the exact language.
How four sources word the claim
Four sources are worth reading with the footnotes in mind. A dermatology academy offers a laser hair removal overview. A dermatologic surgery society covers laser therapy for unwanted hair. A third is Cleveland Clinic's page on how laser hair removal works and what to expect. The fourth is the American Society of Plastic Surgeons laser hair removal procedure page. Line up the wording field by field. Note whether each page says "permanent", "long-term", "reduction" or something else, and whether it attaches a qualifier.
Build a list of outcome sentences
Copy the outcome sentence from each source into one list. Take that list to your consultation and ask the provider which of those wordings their own materials match.
When a promise outruns the sources
If a clinic's promise is stronger than the strongest wording in these sources, ask what the promise rests on and get the answer in writing. This site compares claims and gives no medical advice, so a licensed provider is the one to judge what result is realistic for you.