Dr Justine Kluk - Consultant Dermatologist London

Precare – Hyfrecation Information Sheet

This precare document is designed to give you information about the procedure, including what to expect, how to prepare, and the potential risks and benefits. If you have any questions after reading this, please don’t hesitate to contact us.

What is hyfrecation? 

Hyfrecation is a minor dermatological procedure that uses a low-powered electrical current to heat and destroy unwanted skin lesions. The electrical current is delivered through a small, fine-tipped probe, allowing for precision treatment of specific areas without affecting the surrounding skin.

What is hyfrecation used for? 

Hyfrecation is commonly used to treat benign skin lesions, including:

  • Cherry angiomas (small red vascular growths)
  • Milia (small, white, cyst-like bumps)
  • Skin tags (soft, flesh-coloured growths)
  • Closed comedones (clogged pores that do not have an open surface)
  • Sebaceous hyperplasia (enlarged oil glands)

Your dermatologist will assess your skin and determine whether hyfrecation is suitable for you.

 How long does the procedure take? 

The procedure typically takes 15 to 30 minutes, depending on the number and size of lesions being treated. In cases where local anaesthetic is needed, you may need to allow extra time.

How to prepare for the procedure 

To ensure the best possible outcome, please follow these guidelines:

  • Avoid certain medications: If you take any blood-thinning medications (such as aspirin or warfarin), please inform us in advance as you may need to stop them temporarily.
  • Cleanse the area: On the day of the procedure, cleanse the skin gently with a mild cleanser and avoid applying makeup, lotions or creams to the treatment area.
  • Discuss allergies: If you have any known allergies, particularly to anaesthetics or adhesives, please let us know.
  • Sun protection: Avoid excessive sun exposure in the week leading up to the procedure to reduce the risk of post-treatment pigmentation.

What to expect during the procedure 

  • Local anaesthetic: In some cases, a local anaesthetic may be administered to minimise discomfort. This will be discussed with you beforehand.
  • Sensation: You may feel a mild stinging or tingling sensation as the electrical current is applied, but most people find this tolerable.
  • Duration: The procedure is typically quick and minimally invasive.

Potential benefits 

  • Effective removal: Hyfrecation is a precise and effective method for removing unwanted skin lesions.
  • Minimal downtime: Most people can resume normal activities immediately after the procedure.
  • Targeted treatment: It minimises damage to the surrounding skin.

Potential risks and side effects 

While hyfrecation is generally safe, as with any medical procedure, there are some potential risks:

  • Redness and swelling: Mild inflammation around the treated area is common and usually subsides within a few days.
  • Scabbing or crusting: Temporary scabbing is likely as the treated area heals.
  • Infection: Although rare, there is a small risk of infection. Follow the aftercare instructions to minimise this risk.
  • Scarring: Minor scarring or pigmentation changes may occur, particularly in patients with darker skin tones. This typically fades over a few weeks or months. We can prescribe a treatment cream to help fade marks once the site has fully healed from the procedure.
  • Recurrence: In some cases, the lesion may recur and require additional treatment.

Aftercare instructions 

Proper aftercare is essential to promote healing and reduce the risk of complications. Please follow these guidelines:

  • Keep the area dry for the first 24 – 48 hours: Then gently cleanse the treated area daily with mild soap and water. Avoid scrubbing.
  • Avoid touching or picking: Allow any scabs to fall off naturally.
  • Apply an ointment: Your dermatologist may recommend application of Vaseline or a similar healing ointment.
  • Protect from sun exposure: Use a high-factor SPF to prevent pigmentation changes.
  • Avoid makeup: Refrain from applying makeup on the treated area until fully healed.

When to contact us 

Please contact the clinic if you experience any of the following:

  • Signs of infection (increased redness, warmth, swelling, or discharge)
  • Persistent pain or discomfort
  • Excessive bleeding or crusting
  • Scarring or pigmentation concerns

Warnings and precautions 

  • Pregnancy: Hyfrecation is generally not recommended during pregnancy.
  • Pacemakers: Inform us if you have a pacemaker or any electrical implant, as the electrical current may interfere with these devices.
  • Allergies: Let your dermatologist know about allergies to local anaesthetic, medicines, plasters, metals etc.
  • Scarring: Share your full medical history with your dermatologist, including any history of keloid scarring or pigmentation disorders.
  • Makeup: Please arrive for your appointment without makeup. It is advisable not to reapply makeup for approximately 12 hours after your treatment.
  • Special occasions: If you have an event coming up, please allow a couple of weeks after your treatment for healing if the treatment site will be visible.