Give a new pair a full twelve weeks before you judge them. In the meta-analysis by Whittaker and colleagues, foot orthoses only beat sham insoles at the seven to twelve week mark, not in the first six weeks. The first two weeks are adaptation, and they often feel like nothing at all.
Alex Moreno is a gear reviewer, not a doctor, podiatrist or physiotherapist. This guide describes products and published research. It is not a diagnosis of your feet.
Affiliate disclosure: some links below are affiliate links. If you buy through them, Lume-Trixa may earn a commission at no extra cost to you. It does not change what this guide says or which studies it cites.
How long before insoles actually feel like they are working?
The realistic window is around seven to twelve weeks of daily wear, and the best evidence we have points at the back half of that.
Whittaker, Munteanu, Menz and colleagues published a systematic review and meta-analysis of foot orthoses for plantar heel pain in the British Journal of Sports Medicine in 2018. They pooled 19 randomised trials with 1,660 participants and split the results by how long the follow-up ran: short term was 0 to 6 weeks, medium term was 7 to 12 weeks, and longer term was 13 to 52 weeks.
What came out of it is the single most useful fact for anyone who has just bought a pair. In the medium term there was moderate-quality evidence that foot orthoses reduced pain more than sham insoles. In the short term and in the longer term the evidence was very low quality, which means the trials at those points were too few and too inconsistent to tell you much either way.
Read that back and the practical instruction is obvious. Two weeks is inside the window where even well-run trials found nothing clear. Judging your pair at two weeks is not a verdict, it is checking the oven ten minutes into a roast.
A newer pooled analysis points the same way. Wang and colleagues, writing in Disability and Rehabilitation in 2026, combined 8 randomised trials with 391 people with plantar fasciitis and found that foot orthoses significantly reduced pain compared with the control groups. None of the included studies reported an adverse event related to the orthoses, which is worth knowing before you commit a few months to daily wear.
One thing to be straight about: those trials tested the category, foot orthoses in general, against sham insoles. They are not evidence about any particular brand you can buy today, and no brand gets to claim them as its own result.
Why do the first two weeks often feel like nothing?
Because the first fortnight is mostly adaptation, and adaptation is not a comfortable process for everyone.
You have changed the shape of the surface your foot has stood on for years. The arch is now supported where it used to drop, so slightly different muscles are working, and your foot, ankle and calf spend a couple of weeks settling into it. Some people feel an ache in the arch or a bit of soreness in a new place for the first few days. That is common, and easing into it on a set schedule, below, usually smooths it out.
How long does it take to break in new insoles?
Longer than one shift, and much shorter than the whole trial. The orthotic instructions from Kent Community Health NHS Foundation Trust tell patients to wear new devices for only one to two hours at first, keep to that for at least two days, then add about an hour a day until they are comfortable all day. The same leaflet says it is "normal to expect a little aching at first as the muscles in your legs and feet get used to the devices", and that pain, redness or rubbing is the signal to stop and get them checked.
For an eight-hour shift, that schedule reaches a full day in about eight or nine days. Treat those days as the break-in, and start the twelve-week clock properly once you are wearing the pair all day.
Two other things quietly ruin the first month. The first is intermittent use: a pair worn on Monday and Thursday, in one of three pairs of shoes, is not being given a real test at all. The second is judging by memory. If you have no written record of how bad week zero was, a modest improvement at week six feels like nothing, because your memory quietly resets to how you feel today.
Starting the twelve-week clock on a pair worth testing
Akusoli is a full-length acupressure and support insole aimed at people who stand all day. Our review covers the fit in work shoes, the textured surface, and the terms you get if you decide it is not for you.
See the current price and the guarantee on the official storeOr read our full Akusoli insoles review, with the sizing notes and what the research on insoles does and does not say.
What improves first, and what takes longest?
Think of it in three stages: the break-in, the stretch where you watch the everyday signs, and the band where the trials found their result.
- Days 1 to about 9, the break-in. You are building up to full-day wear on the schedule above. Nothing here is a result yet. What you are checking is fit: no rubbing, no pressure points, and a heel that stays in the back of the shoe.
- Weeks 2 to 6, the everyday signs. This is the stretch to watch the easy-to-miss things: how heavy your feet feel at hour seven, and how long the ache takes to settle once you sit down. They change by degrees rather than switching off, which is exactly why you write them down.
- Weeks 7 to 12, the band the trials point at. This is where the pooled evidence found foot orthoses beating sham insoles on pain, so it is the fair point to judge the pair. Judge it on the pain that matters most to you, which for many people standing all day is the first few steps out of bed.
Progress is also uneven rather than a smooth line. A double shift or a run of long days will produce a bad week in the middle of a good month. That is why you compare week six against week zero, not against last Tuesday.
Do insoles work for plantar fasciitis, and how long does that take?
They are part of the standard first-line advice. The American Academy of Orthopaedic Surgeons lists pre-made or custom orthotics as helpful for plantar fasciitis, alongside shoes with thick soles and extra cushioning.
Heel pain is also the condition this whole timeline fits best, because the trials behind the seven to twelve week window were run on plantar heel pain. The same AAOS guidance names stretching the calves and the plantar fascia as the most effective way to relieve the pain. So treat insoles for plantar fasciitis as one half of a routine, with a few minutes of stretching each day as the other.
Plan for patience on top of that. AAOS notes that more than 90 percent of people with plantar fasciitis improve within 10 months of starting simple treatment methods, so judge the pair on your first steps out of bed at week twelve, not week two. If you want a pre-made pair built around a contoured arch and cushioning, our Akusoli insoles review covers the trim-to-fit sizing and how to ease in during the first week. Akusoli presents its insoles as a complement to professional care for a diagnosed condition.
How do I measure whether they are actually working?
Write down a baseline before you start, then re-check the same four things at two, six and twelve weeks. It takes two minutes and it is the difference between an answer and a shrug.
- Where it hurtsHeel, arch, the ball of the foot, or a general ache including the calves. One finger, one spot.
- When it hurtsFirst steps in the morning, building through the shift, or worst in the evening once you sit down.
- How long it takes to settleMinutes, most of an hour, or still there the next morning. This is the number that moves first and most.
- What makes it better and worseWhich floors, which shoes, which length of shift. Note anything that changed in the same period, like a new job or a heavier week.
This is the same four-point self-check from our guide on why your feet hurt after standing all day, where there is more on what each pattern usually means. Take a photo of the note on day one so you cannot rewrite history later.
Does the returns window cover a fair trial?
Check the stated window on the official store before you buy, then plan the trial around it instead of hoping. A guarantee is only useful if you actually use the whole thing.
Three habits make the window work in your favour. Start wearing the pair daily the day it arrives, so the trial period and the guarantee period run together rather than the pair sitting in a drawer for three weeks. Keep the packaging until you have decided. And put two reminders in your phone, at week six and at a few days before the window closes, so the decision gets made by you rather than by a date passing.
If the window is shorter than the twelve weeks the trials point at, you can still make a sound call inside it: use the six-week check on end-of-shift fatigue and on how fast the ache settles when you sit. Those move earlier than the morning pain does, and they are enough to tell whether a pair is heading in the right direction.
What if twelve weeks pass and nothing has changed?
Then you have a real answer, which is worth more than another month of guessing. Before you write the pair off, check the three things that account for most of the disappointing trials we hear about: the original factory liner was still in the shoe underneath, the pair was worn on some days and not others, or it went into a shoe that was already too tight, so the foot spent the shift being squeezed rather than supported.
If none of those apply and the honest verdict is no change, use the guarantee. And take the result seriously as information: persistent foot pain that has not budged in three months is worth having examined rather than solved by buying a fourth pair of something. An insole is a load-spreading device, not a substitute for having it looked at.
If you have diabetes, reduced feeling in your feet, new one-sided swelling, or a sore that will not heal, see a clinician before relying on an insole or a massager, because those need a proper look.
The pair I ran the twelve-week clock on
Full-length, shaped, and built for people who stand for a living. Our review has the fit notes, the textured surface, the returns terms and our score.
See the current price and the guarantee on the official storeRead the full Akusoli insoles review first if you want the long version.
Frequently asked questions
Should insoles hurt at first?
A little aching at first is expected. NHS orthotic instructions from Kent Community Health NHS Foundation Trust call it normal while the muscles in your legs and feet get used to the devices, and it usually settles if you build up wear gradually. Pain, redness, rubbing that breaks the skin, or discomfort that is worse in week three than in week one is a sign of a fit problem rather than an adaptation phase.
How many hours a day should I wear them?
Start with one to two hours a day for at least two days, then add about an hour a day until you are comfortable all day, which is the schedule NHS orthotic instructions give. After that, wear them for the whole time you are on your feet. Consistency is what makes the twelve-week window mean anything: a pair worn on two days out of five is not being tested.
Do insoles wear out, and how would I know?
Yes. The signal is that the arch stops feeling like it is there and your end-of-shift fatigue creeps back to where it was, which is exactly why the written baseline is useful. Look at the pair as well: visible flattening under the arch or a compressed heel area means it is no longer doing the mechanical job it was doing at the start.
Would custom orthotics work faster than off-the-shelf insoles?
The Whittaker 2018 meta-analysis compared customised with prefabricated foot orthoses and found no difference at any time point, so there is no evidence in that data for a faster result from the expensive route. We go through both options in our guide on custom orthotics versus off-the-shelf insoles.
Do insoles for neuropathy take longer to work?
Plan the trial differently rather than longer. Neuropathy reduces feeling in the feet, and the NIDDK notes that without that feeling you may not notice small problems, so the aching and rubbing this guide uses as break-in signals may never reach you. Get a podiatrist's go-ahead first, bring the pair so they can see any raised acupressure points, and check your feet by eye every evening when the shoes come off. If your clinician is happy with a cushioned, arch-supporting pair, our review of the Akusoli acupressure insoles has the sizing notes and the easing-in schedule.
Sources
- Whittaker GA, Munteanu SE, Menz HB, Tan JM, Rabusin CL, Landorf KB. "Foot orthoses for plantar heel pain: a systematic review and meta-analysis." British Journal of Sports Medicine, 2018;52(5):322-328. pubmed.ncbi.nlm.nih.gov/28935689
- Waters TR, Dick RB. "Evidence of health risks associated with prolonged standing at work and intervention effectiveness." Rehabilitation Nursing, 2015;40(3):148-165. pubmed.ncbi.nlm.nih.gov/25041875
- Wang D, Lin Z, Tan G, Han X, Huang Y. "Efficacy and safety of foot orthoses for improving pain and function in patients with plantar fasciitis: a systematic review and meta-analysis of randomized controlled trials." Disability and Rehabilitation, 2026;48(5):1231-1245. 8 randomised trials, 391 patients; significant pain reduction versus control; no adverse events related to foot orthoses reported. pubmed.ncbi.nlm.nih.gov/40999841
- Kent Community Health NHS Foundation Trust. "Orthotic instructions." Patient leaflet: wear new orthotics for 1 to 2 hours for at least 2 days, then increase by 1 hour a day; a little aching at first is normal; stop if they cause pain, redness or rubbing. kentcht.nhs.uk
- American Academy of Orthopaedic Surgeons, OrthoInfo. "Plantar Fasciitis and Bone Spurs." orthoinfo.org
- National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK). "Diabetes & Foot Problems." Diabetes can cause loss of feeling in the feet, so small problems may go unnoticed; check your feet each day; nerve damage that changes the shape of the feet may call for special shoes or shoe inserts. niddk.nih.gov
Image credits: insole photographs via Wikimedia Commons, Luca Cascianini (CC BY-SA 4.0) and Cogitato (CC BY-SA 4.0).
About the author
Alex Moreno writes the everyday-gear guides at Lume-Trixa. He buys the products with his own money, uses them for weeks rather than an afternoon, then reads the published research behind the idea. He is not a doctor, podiatrist or physiotherapist, and every foot and leg guide he writes says so.
More about Alex Moreno ›Keep reading
- Why do my feet hurt after standing all day? The pattern behind end-of-shift foot pain, the four-point self-check, and what actually takes the load off.
- Custom orthotics vs insoles: which is worth your money? What the head-to-head trials found, and when a moulded prescription pair is genuinely worth the extra.
Affiliate disclosure: some links on this page are affiliate links. If you buy through them we may earn a commission, at no additional cost to you. This does not affect our editorial assessment or the scores we publish. Content in this guide is general information about products and published research, not medical advice, and it is not a substitute for having a persistent problem examined by a clinician.