Lasers are among the most recent advances in hair removal. But they have their limits.

A report in Dermatologic Surgery found that the percentage of permanent hair removal through laser treatment varies dramatically depending on the site on your body:

• If you have laser hair removal on your upper lip, you can expect it to permanently remove 40 percent of the hair.
• If you use lasers to remove leg hair, about 56 percent will be removed.
• If you zap your back, 50 percent hair removal is a safe estimate.
• But in the bikini area, you'll find the amount of permanent hair removal is only 15 percent.
- HealthScout