A Research Study to Evaluate the Safety and Potential Efficacy of ON101 Cream for the Treatment of Venous Leg Ulcers.

"Test drug:~1. Name: ON101~2. Dosage form: Topical cream~3. Active ingredients: Extracts of Plectranthus amboinicus and Centella Asiatica~4. Dose(s): Apply 1 cc per 5 cm2 ulcer size (not exceeding 2 mm in thickness)~5. Dosing schedule: Apply once a day"