The plain reading
The answer is product specific, so this page does not give a number. Ask your provider how long the exact product you are offered is expected to last, and where that expectation is written down.
Documents to read
Look for duration in the documents, not in advertising. Read the FDA page on dermal fillers and the Cleveland Clinic patient page on dermal fillers. Mark any line about how long results are expected to last or when treatment may be repeated.
Also read the ASPS article on dissolving filler. It covers removing a filler on purpose, which is a different question from how long one lasts.
Your action list
Ask your provider:
- How long is this specific product expected to last?
- What does that expectation rest on?
- What would shorten or lengthen it for me?
- What is the plan when it wears off, and what does it cost to repeat?
Get the product name and the answers in writing.
Translator's note
This site is a document reader, not a medical practice, so this is not medical advice. Be cautious of any source that gives one duration for all fillers.