I’ll begin with traditions which most of the women follow. Naturally women will shave the hair from their underarms and legs. Additionally most will likely shave from their “private” areas as well which leaves them smooth and hair free as when they were born. This tradition is followed on the belief that it enhances cleanliness. Many Saudi women will also choose to remove the hair from their arms as well as any unsightly facial hairs. The hair can be removed by use of a razor and shaving cream, use of hair-removing device, waxing or by a traditional method referred to hawala. Hawala is similar to waxing but instead of applying heated strips of wax to the areas where hair is being removed, hawala is a spongy, waxy like substance which when applied and released will remove hair as well. And lastly, some women may also choose permanent hair removal techniques such as hair removal via laser. Saudi women take great pride in smooth skin and being well-groomed. A new bride before her wedding will want to ensure that her body is smooth and soft as a baby with no unsightly hairs visible.
A Saudi man also follows traditions when it comes to hair removal. A man may sport a beard and/or a mustache but he may also choose to shave or have the hair from his underarms removed. Given the intense heat as well as the feeling of cleanliness this is not a bad practice at all. And like the woman, a man may also elect to have the hair removed from his private areas. Men who have more than one wife and intimate relations with these women will especially follow such a practice of removing hair from the private area. To my knowledge, I am not aware of any traditions where Saudi men have chosen to remove the hair from their arms, legs or chest.
For further information about islam and shaving, here are some various links: