Put some spit on your right finger and read three times بسم اللہ اللہ اکبر and read once this prayer.
ام ابرماآ امرا فانا مبرمون (زخرف 79)
And blow on the finger. Now put this finger on the wound and blister. BY the grace of Allah it is very effective. Especially, when this process is done just after abolition .It increases its effectiveness. For women do this process on oil. Alhamdullilah with the blessing of this process the patient of dolt were cured and the patients whose fingers tips were falling also cured.