dear dermatologist how to stop chafing the private...

What is the most effective ways to get rid of unwanted hair ( hair removal ) :
- laser hair removal : less sessions , less perminant , cover big areas 
- electrolysis hair removal : more sessions , more perminant , cover small areas 
How long does those methods lasts :
- laser treatment : up to 6 months , and may get perminant after repeating the treatment everywhile 
- electrolysis treatment : mostly perminant , but its a slow process , and need longer period to finish big and hair areas
Possible treatment side effects :
1. simple skin burns 
2. pain during session
3. not complete hair removal 
4. skin irriration