A pilot, parallel-group, randomised controlled trial on the effectiveness of 10% Formalin in the treatment of plantar warts.

The intervention will involve an initial appointment where the participant will be randomised to either of the treatments (10% formalin or the placebo) and screened for eligibility. The participants will then have the area of their plantar wart debrided (this is where the dead skin overlying the wart will be scraped away) the primary investigator will apply the 10% Formalin treatment solution topically over the wart using a cotton bud, which has been dipped into the solution (this will occur at monthly appointments to a maximum of six months).The participant will then be given instructions (both written and verbal) where they will sand the wart area with 120 grit sand paper and topically apply the 10% Formalin treating solution to the wart. The participant will do this every night for a month (maximum treatment period of 6 months). At any of the monthly appointments if the participant is deemed to no longer have the plantar wart i.e. it has been cured, the participant will cease to use the treatment and they will attend a final follow-up appoinment where they will be clinically examined to assess reoccurance of the plantar wart. The initial appoinment is estimated to take between 30-45 minutes. Thereafter the monthly appoinments are estimated to take between 15-30 minutes and the final follow-up appointment would take about 15 minutes.