Patients will receive pyruvic acid solution 70% prepared by solving of pyruvic acid in water/ethanol solution. Patients will be advised to apply the solution twice daily for a period of four weeks. Application of petrolatum to the surrounding normal skin protects against the corrosive effect of the concentrated acid.

Patients will receive a combination of salicylic acid 16.7%, lactic acid 16.7%, and collodion 100%. Patients will be advised to apply the solution twice daily for a period of four weeks. Application of petrolatum to the surrounding normal skin protects against the corrosive effect of the concentrated acid.

Patients will be visited every two weeks for one month and then every month for up to 3 months by a dermatologist. On each visit, warts will be inspected to determine the number of warts. Any wart totally non-detectable by inspection and touch will be considered as healed.

Patients will be visited every two weeks for one month and then every month for up to 3 months by a dermatologist. On each visit, warts will be inspected to determine the size of warts. The size of the warts will be calculated as the mean size of all the warts.