It freezes tissue.
Liquid nitrogen destroys selected tissue through freezing and thawing.
Cryotherapy: Liquid nitrogen is sprayed or dabbed onto a spot to freeze and destroy it. It is a standard treatment for warts, precancerous sun spots and some harmless growths. It commonly leaves a pale mark that does not fully come back.
Skin Tag Removal: A quick office procedure to snip, freeze or burn off a skin tag. It takes seconds and there is little downtime. Anything pigmented, growing or changing is not treated as a skin tag until a clinician has looked at it.


Choose for quick removal of warts, sun-damage spots or harmless growths — accepting a possible pale mark.
Choose to remove skin tags that catch or bother you in a quick visit — anything pigmented or changing is checked first.
Can you have both?
Freezing is one way to remove skin tags. Snipping is another. One method is chosen per tag.
Liquid nitrogen destroys selected tissue through freezing and thawing.
It is used for benign or precancerous spots.
Nothing remains for microscopic examination.
A diagnosis is needed first.
Skin tags are usually benign and need no treatment.
Removal helps tags that catch, bleed or irritate.
Other growths can be mistaken for skin tags.
Cutting or tying off an uncertain growth is unsafe.

A first-line treatment.

Clears precancers.

Removes growths.

Removed in one visit.

Freezes small tags.

Similar methods remove them.

Injections work better.

Usually treated differently.

Needs excision.

Moles need a different method and lab check.
The specific lesion, scar or affected patch determines the treatment site; there is no fixed body distribution.
Neck and underarms; groin tags are also described in the guide but are beneath the clothing in this illustration.
A selected lesion is frozen: A clinician applies liquid nitrogen to the treatment area. Cold injures the tissue: A controlled freeze-thaw response damages the target. The treated area sheds and heals: A blister or crust may form; repeat treatment can be needed.
Schematic illustration. Technique and response vary. This explains a mechanism and does not specify treatment settings.
The growth is checked: A clinician confirms the diagnosis and chooses a method. The attachment is treated: A tag may be snipped, frozen, or treated electrically. A small wound heals: The treated spot repairs; other tags can develop later.
Schematic illustration. Technique and response vary. This explains a mechanism and does not specify treatment settings.
A few days before: Thick warts: Soaking and filing the wart with a pumice stone or emery board helps the freeze reach the wart, not the callus on top.
Ask your provider: Several spots: If more than one spot is planned, ask to start with one and see how the skin heals.
Hair removal and clothes: No shaving, waxing or hair removal cream on the area that day.
20 to 30 min before: Numbing cream: If you were given numbing cream, apply it 20 to 30 minutes before under a small dressing, or arrive early and have it applied in the office.
The spot is examined first — the most important part of the visit.
Your provider looks at each lesion, often with a dermatoscope — a lit magnifier held against the skin — confirms which are skin tags, marks what is coming off, and says which method they are using.
Liquid nitrogen is sprayed or dabbed on until a white frozen halo covers the spot and a small margin.
A sun spot takes seconds; a wart takes longer and is usually thawed and frozen again the same visit. It burns and stings, peaking as the skin thaws, then aches for a few hours. Fingertips, toes, soles and ears are sorest. Brief and unpleasant, not severe.
For snipping, the tag is lifted with forceps, cut at the stalk with fine scissors, and the pinpoint sealed with pressure, a bleeding solution or cautery.
Freezing is liquid nitrogen sprayed for a few seconds. Cautery touches a fine tip to the base, with a faint burning smell. A dozen tags run 10 to 20 minutes. Expect a sharp pinch per tag; freezing stings for a minute.
Red, swollen and tender, sometimes blistering within the hour.
Tiny dots of blood or small scabs, sometimes a dressing on the larger ones.
Days 1 to 3: A clear or blood-filled blister is expected, not a sign anything went wrong.
Days 1 to 3: Small scabs form on snipped and cauterized sites.
Days 4 to 14: The blister dries into a dark crust with the growth on top, and lifts off on its own over one to two weeks.
Days 5 to 14: Scabs lift off by themselves, and frozen tags darken, dry and drop off in this window.
Weeks 2 to 8: New skin is pink and delicate.
Weeks 2 to 12: A pink, pale or darker spot is left where each tag was, and most fade over weeks to months.
1–3 weeks
Immediately
Permanent for growths; warts may need repeats
Permanent; new tags can form
Cosmetic prices vary a lot and are usually quoted per lesion or per visit, cheaper per spot when several are done at once.
Offices commonly charge a set visit fee covering several tags, or a per-lesion price with a minimum, and the per-tag cost drops as the number goes up.
In the US, freezing warts and precancerous sun spots is billed as medical treatment, so you pay your copay or whatever the deductible has not covered.
In the US, skin tag removal is usually self-pay because it counts as cosmetic.
Often. Pigment cells die at milder cold than the growth, so most effective freezes take some color out. Some returns over months; a good part does not. The mark is usually a little wider than the spot and stands out far more on deeper skin tones — worth discussing before you agree.
No. Freezing destroys the tissue without a diagnosis, so a skin cancer can heal over at the surface while it keeps growing underneath. Anything pigmented, new or changing gets examined and sampled, and moles that need removing are cut out and sent to a laboratory. Same for at-home freezing and mole removal pens.
A sharp burning sting for ten to thirty seconds during the freeze and the thaw, then an ache for a few hours. Fingers, toes, soles and ears are worst. Brief and genuinely unpleasant rather than severe, and ordinary painkillers are enough.
Normal, and it is how the treatment works — the skin separates and lifts the growth off with the blister roof. Leave it alone and cover it. If it is large, tense and painful, the clinic can drain it, which beats tearing the roof off yourself.
Usually several, every two to four weeks. Many clear over three to six treatments, some need more, and some never respond. Salicylic acid at home in between improves the odds. If nothing has changed after three or four sessions, ask about a different approach.
No. They use a propellant gas much warmer than liquid nitrogen and harder to aim, so they are weaker on thick and plantar warts. They can still blister and leave a pale mark. Not for the face, and never on a mole or an unexamined spot.
No — they are harmless growths of ordinary skin. What makes them worth showing to someone is that other things can look like them, so a lesion that is dark, firm, growing, bleeding or changing should be examined rather than assumed.
Often you cannot, and that is the honest answer. Skin tags are soft, skin-colored and hang on a narrow stalk in areas that rub, but moles, warts and seborrheic keratoses can be raised in the same places. A clinician with a dermatoscope can usually tell in seconds.
No. There is no evidence that removal encourages new ones. New tags appear because the tendency continues, and they show up in the same friction areas over the years.
Each tag is a brief sharp pinch, and larger ones are numbed first. A small pink, pale or darker spot at each site is normal and usually fades over weeks to months. Freezing is most likely to leave a lasting pale dot, particularly on deeper skin tones.
You can buy kits, and the honest advice is not to. Nothing at home examines the lesion first, freezing kits are too weak and blister normal skin, acid pastes and cauterizing pens burn a permanent mark, and floss ligation half-works often enough to be miserable. In an office it takes seconds and someone checks what it is.
Usually not, because removal for appearance is cosmetic. It is sometimes covered when tags repeatedly bleed, get inflamed or catch on clothing, and that needs documenting. Ask the office to check beforehand.