CryoPen

CryoPen is a medical-grade cryotherapy device that delivers a precise, controlled jet of nitrous oxide at -89°C directly onto the targeted skin lesion. This freezes and destroys the tissue rapidly, without affecting the surrounding healthy skin. The treated lesion forms a scab, which gradually falls away over the following two weeks, leaving smooth, clear skin below.

The extreme cold causes the water inside the lesion's cells to crystallise, destroying the tissue at a cellular level. Because the CryoPen applies nitrous oxide with pinpoint accuracy, only the lesion itself is targeted — surrounding tissue is protected. The body then naturally forms a scab over the treated area, which comes away after approximately two weeks as the skin heals beneath it.

Warts and verrucas; skin tags; milia (blocked oil glands); age spots and sun spots; cherry angiomas (red moles); sebaceous hyperplasia; seborrhoeic keratoses. Price: £96 per session — approximately 3–5 small lesions can typically be treated in a single appointment. CryoPen is suitable for benign lesions only. Any lesion that is suspicious, changing, or potentially cancerous must be assessed by a dermatologist before treatment can proceed. If you are unsure about a lesion, we recommend a Mole Mapping assessment first.

Most lesions are successfully treated in a single session. Some larger or more stubborn lesions — such as certain warts — may require several treatments.

The treated lesion will gradually darken and form a blister, then crust over in the days following treatment, typically falling away in approximately 2 weeks — though some lesions can take up to 6 weeks — leaving smooth skin below. The healed area may appear lighter or darker than the surrounding skin in the weeks that follow, as the pigment settles. This is a normal part of the healing process and usually improves over time.

Most patients experience only mild, brief discomfort — described as a quick sting or cold pinch — during the application. No anaesthetic is required for most lesions.

2–6 weeks for the treated area to fully heal. Normal daily activities can be resumed immediately. The area should be kept clean and dry and protected from direct sun exposure during healing.

Temporary redness, swelling, or blistering at the treatment site; a small scab or crust forming (do not pick); rarely, temporary or permanent pigmentation changes, particularly in darker skin tones; minimal risk of scarring; very rarely, incomplete removal requiring a second treatment.

No — once treated, the lesion is permanently destroyed. However, new lesions may develop in other areas over time, which can be treated in future sessions.

Safe for most adults and children, for benign lesions only. We approach with caution in very dark skin tones (higher risk of pigmentation changes); cold-sensitivity conditions such as cryoglobulinaemia or Raynaud's disease; diabetes or poor circulation; and areas over bony prominences or near the eyes.

Keep the area clean and dry. Do not apply topical creams or treatments to the lesion for 24 hours before. Inform your clinician of any medications, skin conditions, or cold-sensitivity conditions. If you have any concern that a lesion may be changing or suspicious, please mention this.

Keep the treated area clean and dry. Do not pick, scratch, or burst any blistering. Apply a light healing ointment if advised. Protect the area from direct sun exposure until fully healed. Contact the clinic if you experience unexpected pain, spreading redness, or signs of infection.