It demonstrates a higher success rate and is less painful than mechanical matrixectomy. Its success depends on good haemostasis.

1. Apply an 80% to 88% phenol solution using a slightly moistened cotton tip applicator or flat toothpick only to the matrix but not to the nail bed or surrounding tissue as this slows wound healing.

Do not use phenol if the patient or a member of the medical team is pregnant.

2. Apply directly to the nail matrix at the lateral groove and under the proximal crease two to three times for 30-60 seconds each lap.

3. Rinse thoroughly with 70% isopropyl alcohol or saline to remove any excess phenol.