Straight answers, including the ones that cost us a sale

Ordinary skin tags on the neck, underarms, chest and body, and common warts on the hands and fingers. Plantar warts on the sole of the foot are within range but they are the stubborn ones and take several sessions.

It is intended only for growths already known to be harmless. If nobody has ever looked at it and you are working from a photograph you found online, the honest answer is that you do not know what it is yet.

Also off limits regardless of what the growth is: the eyelid margin where the lashes sit, the eye itself, inside the nose or mouth, and the genitals.

• Anyone with diabetes, poor circulation or a bleeding disorder.
• Anyone whose skin scars thickly or forms keloids.
• Anyone with a pacemaker or another implanted electronic device.
• Anyone with an active skin infection at the site.
• During pregnancy, unless a doctor has said it is fine.

Age limits: skin tag treatment is for adults aged twenty-two and over. Wart treatment is not for children under four, and any use by a minor is carried out by a responsible adult.

You use the card that comes in the box before you use the pen. It sets out what an ordinary skin tag and a common wart look like, and what disqualifies a growth entirely.

We are going to be blunt about why that card exists. Several conditions that need a doctor look, to a person who is not a doctor, very much like an ordinary skin tag. That is not a scare tactic and it is not a legal disclaimer. It is the single reason we would rather you closed this page and made an appointment than treated something you were unsure about.

On the face, yes, with the fine tip and a lower level, and this is exactly what the light at the tip is for. Around the eye, only on the skin well away from the lash line. Never the eyelid margin and never the eye. A tag sitting right on the lid margin is a two-minute job for a doctor and it is not worth the risk of doing it yourself.

A growth that does not respond after a fair attempt, or one that returns in the same place, should be looked at rather than treated again. That is true of any at-home method, ours included.

Levels one to thirteen run with the fine tip, and fourteen to nineteen with the coarse one. Start lower than you think you need. A lower level applied twice is safer, and heals better, than a high level applied once. The illustrated guide in the box maps growth sizes to a starting level.

It stings for about a second, most often described as being flicked with an elastic band. That is the whole of it. If a spot is more sensitive than you expected, drop a level and take it in two shorter passes.

The risk is real, and it is why there are shields, graded levels and hydrocolloid patches in the box rather than just a pen. Keeping the treatment on the growth instead of the skin around it is the thing that protects you. The guide shows what normal healing looks like day by day, so you can tell ordinary scabbing apart from something that needs attention.

The treated spot usually darkens within a day and lifts away over the following week. Do not pick it, let it come away on its own. Thicker growths take more than one session, with two weeks between attempts. Plantar warts commonly need three or four goes.

Thirty fine tips and two coarse tips come in the box, and the pen recharges rather than running out. Most people who buy this have several rather than one, and it is packed on that assumption.

Fine tips are single-use, one per growth. Coarse tips are reusable after cleaning as described in the guide. Never share a tip with another person, and never re-use a fine tip on a different site.

In a sealed rigid container in your household waste, or a sharps container if you keep one. Not loose in a bin bag.

Over the USB cable in the box, from any standard USB power source. A full charge takes about two hours and covers many sessions. There is nothing to replace and no cartridge to buy.

We pack and dispatch in under 48 hours on business days, and delivery takes 3 to 7 business days after that. Shipping is free on every order, with no minimum.

The United States only, including APO and FPO addresses.

Your tracking number is emailed the moment the parcel leaves us, and you can enter it on the Track Your Order page at any time. If nothing has arrived by the end of the second business day, check your spam folder, then tell us.

No. The outer packaging carries no branding and no description of the contents, and the charge on your statement reads TENDI. Order emails use plain subject lines.

If the parcel has not yet gone to the carrier, yes, write to us straight away. Once it has been handed over, the address is fixed and it has to run its course.

Long quiet gaps mid-journey are normal and are not a sign of a problem. If nothing has changed for five business days, or the parcel has not reached you within ten business days of dispatch, tell us. We open the claim with the carrier ourselves rather than sending you to do it.

One hundred days from the day it is delivered. Treat a few growths, give it a fair run, and if you decide it was not worth the money, write to us and we refund you. No restocking fee, no administration charge, and we will never ask you to photograph your skin.

• Email us inside the one hundred days with your order number.
• Tell us briefly why, in a sentence or two.
• Give it at least fourteen days of real use, unless it is faulty.
• Try one adjustment we suggest, since most disappointing results come down to the level or the tip.
• Send the pen, the coarse tips and the case back.

The full conditions are in the Return & Refund Policy, and there is nothing in them we have not said here.

You do on a change-of-mind return, using a tracked service. We do when an item is faulty, damaged or wrongly sent.

Issued within 5 business days of the parcel reaching us, and usually the same day. How quickly it appears on your statement after that is your bank’s decision.

That is not a guarantee claim, it is our mistake, and it is handled faster. Tell us within 30 days and we replace it or refund you in full, with no waiting period and no return postage for you to pay.

Twelve months against manufacturing defects from the delivery date. It covers the electronics and the charging system in normal use. It does not cover accidental damage, water damage, or a device that has been opened.