Magic Shave is such a product and is usually found in the men's shaving section. Waxing is a good way to remove hair and should be done by a professional. Many women use this method. You still may get hair bumps from this. And many professional waxers recommend that you use a lofa sponge to clean this area when you shower.
Electrolysis is another method to remove unwanted hair.
This is a permanent method but requires several treatments to remove all the hair. The process is expensive and may cause some scarring after the treatments. Laser therapy is another permanent method. It is a new form of hair removal. This is the most expensive of all the methods.