Most customers begin noticing clearer, healthier nail growth within 1–2 months of twice-daily use, with fuller results typically visible over several weeks as the nail grows out.

The clippers. A thick nail that's been impossible to cut usually gets easier within a week or two, and a softer nail stops pressing against the front of your shoe. That happens long before anything looks different.

It helps — but not the way most people are told.

Don't file a hard, dry nail. That's what causes the damage podiatrists warn about; thinning it aggressively can lead to splitting and ingrown nails. Use the pen for the first week first. Once the plate has softened, a light pass with a clean board takes seconds and almost no pressure. Once every week or two is plenty.

Use a fresh board for each nail, and never take one from an affected nail to a healthy one.

Skip filing entirely if you have reduced feeling in your feet, poor circulation, diabetes, or if the nail is painful — have it done by a podiatrist instead.

You're not trying to remove the nail. You're taking the shine and the top ridges off so the formula has somewhere to go — a few light passes until the surface looks matt rather than glossy. If it hurts, or you can see pink through it, stop. That's too far.

Yes, and you'll see it sooner. Fingernails grow two to three times faster than toenails, so grow-out is months rather than most of a year.

Not while you're treating it. Polish seals the nail, blocks everything you're trying to get in, and hides the base of the nail — which is the one place you want to be watching.

10ml, which is 35–50 days at twice daily on a few nails. Somewhere around 60–80 cents a day.

Worth saying plainly: people treating this with drugstore soaks routinely spend into four figures over a few years. This isn't the expensive option.

The formula is low-alcohol, fragrance-free and buffered close to skin's own pH, and the applicator puts a controlled dose on the nail rather than soaking the surrounding skin.

Two things matter more than the formula, though. Don't file — have that done by a podiatrist. And check with your healthcare professional before you start if you have an ulcer, any open or broken skin, numbness, or any existing foot complication. A foot that doesn't reliably tell you something is wrong needs eyes on it that aren't your own.

Stop using it and speak to someone if you notice irritation, redness or discomfort.

Keep using it, and apply along the free edge and underneath where the nail has separated — that's usually where the problem sits.

If a nail has come off completely, only apply to the nail bed if the skin is fully intact. If there's broken skin, an open area, redness, swelling or discharge, stop and see a doctor or podiatrist, and don't put anything on it in the meantime.

Most people who get results with this aren't the person with the nail, so you're in good company.

Two things worth knowing. Trimming gets easier well before anything looks different, usually in the first week or two — you'll notice it in your hands before either of you notices it on the nail. And if you're doing more than one person's feet, use a separate file for every nail and wipe the tip between them.

No. Oral antifungals aren't suitable for plenty of people — liver concerns, drug interactions, or a doctor who simply won't prescribe them. This is a topical. It sits on the nail, and none of it depends on you being able to take a pill.

Mildly herbal. That's the oregano and thyme phenols, which are actives rather than fragrance — there's no added perfume in it. It fades within a few minutes of drying.

You can, but give it a chance to work. Don't apply anything else over the top within an hour or so — you'll lift the film off, and the film is the thing keeping the actives on the nail. If you're on a prescription lacquer, speak to whoever prescribed it first.