Published 31 October 2026 · Reviewed by Dr Sin Yong
Laser, shave and excision are three different answers to a mole, and the choice between them is made under the dermatoscope before any method is discussed. CO2 laser suits a small, flat mole with a benign pattern. Shave or radiofrequency suits a raised benign mole. Excision suits any mole that needs a full diagnosis, because it is the method that sends the whole lesion to a pathologist.
The three methods differ in what they remove, what reaches the laboratory and what they leave behind. The table sets them side by side, with the option of leaving a benign mole alone, which is always on the list.
Method
How it works
Tends to suit
Tissue for histology
What to weigh
CO2 laser
A focused 10,600 nm beam, absorbed by water in tissue, vaporises the mole in fine layers
Small flat moles on the face or body with a benign pattern
Limited: the tissue is vaporised
Pigment can return if deeper cells remain; never used on an atypical mole
Radiofrequency
High-frequency energy shaves and seals in one motion under local anaesthetic
Raised benign moles; delicate sites such as the nasal fold
Limited
No whole specimen for the pathologist
Shave removal
The raised part is shaved level with the skin under local anaesthetic
Protruding benign moles where a flat contour is the goal
Yes: the shaved tissue can be sent
Deeper mole cells stay, so a raised mole can regrow at the base
Excision
The whole lesion is removed and the wound stitched
Any mole with atypical features, or one that needs a full diagnosis
Yes: the entire lesion is examined
A fine sutured line rather than a round mark
Monitor
The mole stays; it is photographed and re-scoped over time
Benign moles the patient prefers to keep
Not applicable
Does not change how the mole looks
Red moles are usually cherry angiomas, clusters of small vessels rather than pigment cells, and are treated with R2 Glow rather than any of these; see cherry angiomas.
Why the dermatoscope decides before the method
The method follows the diagnosis because the methods differ in what they leave for a pathologist. A dermatoscope is a magnifier with polarised light that removes surface glare and shows the pigment network, dots, streaks and vessel patterns that separate an ordinary mole from one that deserves attention. A 2008 meta-analysis of studies in clinical settings found dermoscopy more accurate than naked-eye examination for diagnosing melanoma, which is why Dr Sin Yong scopes every mole himself before anything touches it.
If the pattern is benign and the mole bothers you, laser, radiofrequency or shave can be considered according to its shape and site. If the pattern is atypical, the mole is changing, or the diagnosis is uncertain, the answer is excision with histology or referral to a dermatologist, never laser, because vaporised tissue cannot be examined. Freezing, mole removal creams and salon cautery are not used for moles for the same reason, and the creams also scar. The scope-first assessment is described on mole removal Singapore.
“I would rather remove a mole by the method that tells us what it was than by the one that leaves the smallest mark. On a benign, scoped mole you can have both.”
Dr Sin YongOn choosing laser, shave or excision for a mole
Laser mole removal: what it suits and what it cannot do
CO2 laser mole removal suits a small, flat mole with a benign pattern, most often on the face, where precise depth control helps keep the mark small. The beam vaporises the mole in thin layers, and the site heals with a crust, then pink new skin. A 2021 retrospective review of 1,545 facial junctional moles treated with fractional CO2 laser in 618 patients used dermatoscopy to monitor the sites afterwards and reported darkening or lightening, fibrosis, small dimples, redness and scarring among the side effects at follow-up. It was a single-centre series of flat junctional moles, so it says nothing about raised or atypical ones.
What laser cannot do is provide a specimen, so it is never used on a mole that may need a diagnosis, and a mole that recurs after laser is re-examined rather than simply treated again. In tanned or darker skin, darkening at the site is a known risk, which is why sun protection is part of the treatment. How a facial mole is planned is on mole removal on the face.
Shave and radiofrequency removal: raised moles and regrowth
Shave removal and radiofrequency take a raised benign mole down to the level of the surrounding skin. Many raised moles are dermal moles, with cells that extend below the skin surface, so shaving flattens the bump without removing every cell. That is both its advantage, a round flat mark without stitches, and its main limitation, regrowth of pigment at the base.
The evidence puts numbers on that trade-off. In a 2005 study of 204 common moles removed by shave excision and reviewed three months later, recurrence was seen clinically or under dermoscopy in about one scar in five, and facial sites were more likely to leave a scar that was hard to see. A 2019 study following 195 shaved moles found recurrence more likely in younger people, in darker skin types and in compound moles, and linked it to pigment visible on the underside of the removed specimen. Recurrent moles can look atypical under the dermatoscope, so any regrowth is re-scoped before anything is done.
Excision: when the whole mole must reach a pathologist
Excision removes the whole mole and closes the wound with stitches, so the entire lesion reaches the laboratory. It is the method for a mole with atypical features on dermatoscopy, one that is new in adulthood, changing, bleeding without injury or unlike your other moles, and any lesion whose diagnosis is uncertain. The mark is a fine sutured line rather than a round spot.
Where a mole needs more than a simple excision, or the diagnosis calls for specialist care, it is referred to a dermatologist. Whichever method is used, the histology result, when tissue is sent, is discussed with you when it returns. What the site looks like while it heals after each method is pictured on mole removal downtime, and the wound routine is on mole removal aftercare.
Your next step
1. MessageWhatsApp +65 8023 7170 with what is bothering you. A reply comes from the clinic, not a bot.
2. AssessmentDr Sin Yong examines you himself on Orchard Road, with ultrasound where earlier filler is involved.
3. A plan in writingWhat he would do, what he would not, the fee factors, and the option of no treatment.
Every treatment is performed by Dr Sin Yong personally. Singapore Medical Council registered · invited to share his clinical expertise internationally for CLASSYS, DEKA, Fotona, Hironic and Ilooda.
Bring earlier photographs of the mole and any previous histology results. How consultations work.
Soft growths on a narrow stalk are usually skin tags, not moles, and are handled differently.
Frequently Asked Questions
Neither is better for every mole. CO2 laser suits a small, flat mole with a benign pattern on dermatoscopy, where a small round mark matters. Excision suits any mole that needs a full diagnosis, because it sends the whole lesion to a pathologist. The dermatoscope decides which applies; an atypical mole is excised or referred, never lasered.
Yes. Laser and shave removal can leave deeper mole cells behind, and pigment can return at the site. In a 2005 study of 204 shaved moles, recurrence was seen in about one scar in five. Regrowth is re-examined under the dermatoscope before anything else is done, because a recurrent mole can look atypical.
Every method leaves a mark of some kind. Shave removal usually leaves a round, flat mark that is pink at first and fades gradually; facial sites tend to heal less visibly. In darker skin the mark can darken for a while, so sun protection matters. Excision leaves a fine line instead, and laser a small round mark.
Not in a useful way. CO2 laser vaporises the mole in layers, so little or no tissue remains for a pathologist to examine. That is why laser is kept for moles with a clearly benign pattern on dermatoscopy, and why a mole that is atypical, changing or uncertain is excised for histology or referred instead.
Stitches are used after excision, where the whole mole is removed and the wound is closed. They are not usually needed after shave, radiofrequency or laser removal, which leave a shallow wound that crusts and heals on its own. Which method suits your mole is decided after it has been examined with a dermatoscope.
A raised mole on the face with a benign pattern is usually taken level with the skin by radiofrequency or shave, which avoids stitches and keeps the mark round and flat. Pigment can regrow at the base, so the site is reviewed. If the mole has atypical features, it is excised for histology instead, regardless of the site.
Yes. Leaving a benign mole alone is always a valid choice. It can be photographed and re-examined with the dermatoscope over time. A mole that becomes new, changing, itchy, bleeding or different from your others should be examined promptly whatever was decided before.
References
Dermoscopy compared with naked eye examination for the diagnosis of primary melanoma: a meta-analysis of studies performed in a clinical setting. British Journal of Dermatology (Vestergaard ME, Macaskill P, Holt PE, et al.), 2008. source
Carbon dioxide ablative laser treatment of acquired junctional melanocytic nevi. Journal of Cosmetic Dermatology (Köse O), 2021. source
Shave excision of common acquired melanocytic nevi: cosmetic outcome, recurrences, and complications. Dermatologic Surgery (Ferrandiz L, Moreno-Ramirez D, Camacho FM), 2005. source
Clinical and dermoscopic (in vivo and ex vivo) predictors of recurrent nevi. European Journal of Dermatology (Heck R, Ferrari T, Cartell A, et al.), 2019. source
About this page: written and medically reviewed by Dr Sin Yong, MBBS (NUS), MRCS (Edinburgh) · Last reviewed 6 November 2026 · Illustrative images only, not patients · Editorial policy
