what medicine is effective to remove keloid scars?

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I have a friend who has a keloid scar all over her legs and feet. She suffered from a third-degree burn due to a hot water. She used to apply contractubex on the keloid scars but it's not that effective. The keloid scars are itchy so she find herself stressed out because she is not able to sleep well. She is searching for other medicine that is really effective to remove her keloid scars. She was not able to wear skirts because of the keloid scars on her legs. What medicine is effective to remove keloid scars?