Microneedling results come from a series, not one session. Two dermatology organizations give counts and spacing, and a Folsom reader should compare them before pricing a plan.
What the American Society for Dermatologic Surgery says
The American Society for Dermatologic Surgery states: "Typically a series of monthly treatments (at least three) are required for optimal results."
What the American Academy of Dermatology says
The American Academy of Dermatology goes into more detail: "You may need more than one treatment session to get the results you want. For example, if your dermatologist is treating acne scars, you may need 3 to 5 treatments, which are performed every 2 to 4 weeks. Studies have found that this treatment plan can fade acne scars by 50% to 70%."
Where the two sources differ
Both agree on at least three treatments. They differ on spacing, with the American Society for Dermatologic Surgery describing monthly sessions and the American Academy of Dermatology describing sessions every 2 to 4 weeks in its acne scar example. The 50% to 70% figure applies to acne scars under that plan. It is not a promise for every skin concern.
The honest answer is a range. Plan on three at minimum, up to five for the acne scar example, and spacing between two weeks and a month depending on the source and the goal.
What this does to the real cost
Multiply the per-session price by three to five, then ask whether touch-up sessions follow. A low single-session price can hide a series that costs several times as much. Ask the provider for the full series price in writing.
Where the session counts come from
The American Society for Dermatologic Surgery maintains a microneedling patient page. The American Academy of Dermatology explains how microneedling can fade scars and uneven skin tone. The U.S. Food and Drug Administration lists information about microneedling devices. For a variant of the technique, read this systematic review of radiofrequency microneedling for facial rejuvenation on PMC.
Count the series, not the session. That is the number that decides whether the plan fits your budget.