I had electrolysis for hair growing from a mole in my shoulder. I had the mole since birth, and before I did electrolysis I had the mole inspected by a dermatologist, who confirmed that the mole is non-cancerous/dangerous.
I had 3 hairs growing from the mole. The electrolysis was 33% successful. Today, almost 2 years later, I have 2 hairs growing out of it. I plan on doing electrolysis again soon.
Here is my thread about it - Electrolysis for hairs in mole?