Microneedling Healing Stages Day by Day

Microneedling works by stimulating the skin to make collagen — the American Academy of Dermatology (AAD) calls it collagen induction therapy, describes it as minimally invasive, and says microneedling done by a dermatologist is safe for all skin tones.

The treatment itself comes first.

Cleveland Clinic says a numbing cream such as lidocaine is applied 30 to 45 minutes before microneedling, that you may feel warmth or a scratching sensation while the device works, and that discomfort is likelier where the needles pass over bone, such as the cheekbones.

Deeper treatment may cause a little bleeding, per Cleveland Clinic.

Immediately afterward, the AAD describes skin that looks red on lighter skin tones or darker on darker skin tones, with a sunburned feel and possible discomfort, burning or swelling.

The AAD calls the downtime minimal — minimal, not none — and says people can return to work or school immediately.

One scope note before the day-by-day: the numbers below come from SkinPen's FDA study, which followed 41 adults with moderate-to-severe atrophic acne scars, 20 of them treated with the final device.

The FDA has authorized microneedling devices — cleared or granted through its De Novo and 510(k) pathways, not approved — to improve the appearance of facial acne scars, facial wrinkles and abdominal scars in people aged 22 or older.

A plan aimed at anything else — stretch marks, large pores, melasma, hair loss, the under-eye area — runs outside those authorized uses, and the FDA states that the risks of off-label uses, and of combining the devices with other products, are not known.

Still deciding on the treatment itself?

Our microneedling guide covers the devices, the evidence, the cost and how to find a provider.

Days 1 to 3 are when the reactions documented most often run, and the clearest numbers come from SkinPen's FDA study.

In that study, redness, itching, peeling, discomfort or tenderness was the most common response, logged in 31% of subjects and lasting 1 to 3 days.

Burning was logged in 9% of subjects for 1 to 3 days, rough skin in 7% and tightness in 4%, each lasting 1 to 2 days.

No serious adverse events were recorded in the study.

The clinical guidance lines up with those durations.

The AAD says the redness, discomfort, burning or swelling usually clears in a few days to a week.

Cleveland Clinic puts redness and swelling at up to five days and says skin may burn or feel tight in that window.

These percentages are group rates from one study of 41 adults — not a forecast of what any individual's skin will do.

Going by the documented durations, days 4 to 7 are when the earlier reactions are ending: redness, itching, peeling, discomfort or tenderness lasted 1 to 3 days, burning 1 to 3 days, and rough skin and tightness 1 to 2 days in the SkinPen study.

The response with the longest documented run is dryness — 12% of subjects had it, lasting 1 to 6 days.

Cleveland Clinic says skin can turn dry and flaky after microneedling, without putting a day on it, and notes the dryness improves with moisturizer.

Cleveland Clinic's redness-and-swelling window — up to five days — also closes inside this stretch, and the AAD's outer range, a few days to a week, ends here too.

By those ranges, the common responses in the SkinPen study lasted no longer than 6 days, and the AAD says reactions usually clear within a week — usually, not always: swelling that lasts longer than a week is one of Cleveland Clinic's reasons to call a provider, covered below.

Put the sourced ranges on one calendar and they agree closely: the AAD gives reactions a few days to a week, Cleveland Clinic gives redness and swelling up to five days, and the longest response in the SkinPen study — dryness — ran 1 to 6 days.

None of the sources on this page gives a day-by-day schedule, so treat the day labels as a way to organize those ranges, not as measured checkpoints.

Healing is also not the same clock as results.

The reactions are usually gone within the week, while results appear gradually as collagen forms — the AAD says some improvement may be seen within a few weeks, but full results usually take several months.

That makes the after-treatment week a poor judge of whether the treatment is working; judgment on results belongs to the months afterward, measured against the concern being treated.

What the sources describe as expected includes redness or a darker look, a sunburned feel, burning, tightness, rough skin, dryness and flaking.

FDA's less common risk list is where healing stops being routine: pigment changes (skin turning darker or lighter), lines on the face, cold sore (herpes) reactivation, swollen lymph nodes, infection, and stinging or itching when cosmetics are applied.

The FDA also states that some side effects may be permanent, though most occur shortly after a treatment and resolve.

A reaction on that list is a question for the licensed provider who treated you, not something to wait out.

Published answers are thin on some other questions too: we found no source setting exercise timing, restart dates for retinol or acids, or whether breakouts after microneedling are normal.

What to do while skin heals is its own subject — our microneedling aftercare page carries the do-and-avoid list, from the 24-hour makeup wait to the sun rule.