The device clipped onto a fingernail

Clip it on. Press once.

That is the entire operation. Below is what happens in those seven minutes, what the two lights are, and how long any nail routine actually takes.

A session, start to finish

Seven minutes, and none of them need you.

There is no routine to learn and no technique to get right. The device is timed, and it ends the session itself.

  1. 00:00Start

    Clip it on

    The jaws close over the fingertip and the device holds itself there. Nothing to apply, nothing to soak, nothing to peel off afterwards. Your hand is free.

  2. 00:01One press

    Press the button

    A single button starts the session. The 880nm laser and the 518nm light run together for the whole seven minutes - there are no modes to choose and no intensity to set.

  3. 7 minThe session

    It runs on its own

    Nothing to hold, nothing to adjust, no timer to watch. Sit still enough that the device stays put and do whatever you were doing.

  4. 07:00Shut-off

    It stops itself

    The device switches off automatically at the end of the session. If it stops sooner than you expected, check the manual before starting another one.

  5. NextOr done

    Move on, or put it away

    Take it off and repeat on the next nail, or set it back on the shelf until tomorrow. It is cordless, so there is nothing to unplug.

One 7-minute session treats the nail the device is clipped to, and there is no cap on how many nails you include - allow one session for each. Follow the frequency in the manual rather than guessing: once a day, until you see the result you are after.

The two lights

Published numbers, not marketing shorthand.

These are the manufacturer's specifications for factory model HZJ-01, exactly as supplied to us. We do not say what the light does, and you should not read a specification as a promise of any result.

880nm Infrared laser wavelength
518nm Second light wavelength, as listed on packaging
7 min Timed session, automatic shut-off
Cordless Rechargeable device, charging accessories included
The honest part

Nails grow slowly. Nothing changes that.

It matters more than any specification on this page, so it gets its own section rather than a line of small print.

Week 1 5% of a toenail replaced

Nothing visible yet

A fingernail grows roughly 3mm a month and a toenail about 1mm. In the first week the nail has barely moved, whatever anyone is doing to it.

Months 1-3 30% of a toenail replaced

New growth reaches the middle

Fresh nail emerges at the base and pushes the older nail forward. Anything that is going to look different looks different at the base first, never at the tip.

Months 6-12 100% of a toenail replaced

A toenail has replaced itself

That is how long a full toenail takes to grow out from base to tip. It is the honest horizon for any nail routine, this one included.

We are not going to tell you what the device will do for you - we are not in a position to, and anyone who does is guessing. What we can tell you is how long nails take, because that part is not up for debate. If you want a device that changes something this week, this is not it.

Straight answers

What this is, and what it is not.

We would rather you know before you buy than find out after. Both columns are worth reading.

What it is

  • A personal care device you keep, used at home on your own schedule
  • A seven-minute daily routine, not a course you have to finish
  • Cordless and quiet enough to leave out on a shelf
  • One purchase, with a 1-year warranty and 30 days to change your mind

What it is not

  • Not a medical treatment, and not a substitute for professional advice
  • Not a prescription device, and not something we will make health claims about
  • Not an overnight change - nails grow slowly, and nothing changes that
  • Not a subscription. There is nothing to refill and nothing to renew
The device and its instruction leaflet laid flat
Before you start

Read this part properly.

  • Never direct the laser at anyone's eyes, including your own.
  • If you are pregnant, do not use the device near the abdomen.
  • Keep it away from children. Under 18s should only use it with an adult present.
  • Read the manual before the first session and follow it every time.

The full instructions ship in the box. If you have any condition affecting your nails, speak to a healthcare professional before starting anything new.

One device, one price

That is the whole of it.

No refills, no subscription, nothing to renew. You charge it, and that is the running cost.

See the device

30-day returns. 1-year warranty. US delivery: 3–5 business days after dispatch.